Home / 1,020,921,921.70-1,531,382,882.55-998,247,105.70

Finding the Fourth Proportional to 1,020,921,921.70, 1,531,382,882.55 and 998,247,105.70

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Solution

The fourth proportional to 1,020,921,921.70, 1,531,382,882.55 and 998,247,105.70 is: 1,497,370,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,921,921.70 : 1,531,382,882.55 = 998,247,105.70 : x
  2. Step 2: Convert to fraction form
    1,020,921,921.70/1,531,382,882.55 = 998,247,105.70/x
  3. Step 3: Cross multiply
    1,020,921,921.70x = 1,531,382,882.55 × 998,247,105.70
  4. Step 4: Simplify right side
    1,020,921,921.70x = 1,528,698,530,224,060,672
  5. Step 5: Solve for x
    x = 1,528,698,530,224,060,672/1,020,921,921.70
  6. Step 6: Final answer
    x = 1,497,370,658.55

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Half scale
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Double scale
Find fourth proportional to 1,020,921,922.70, 1,531,382,884.05 and 998,247,106.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.