Home / 665,979,666.90-998,969,500.35-655,775,999.70

Finding the Fourth Proportional to 665,979,666.90, 998,969,500.35 and 655,775,999.70

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Solution

The fourth proportional to 665,979,666.90, 998,969,500.35 and 655,775,999.70 is: 983,663,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,979,666.90 : 998,969,500.35 = 655,775,999.70 : x
  2. Step 2: Convert to fraction form
    665,979,666.90/998,969,500.35 = 655,775,999.70/x
  3. Step 3: Cross multiply
    665,979,666.90x = 998,969,500.35 × 655,775,999.70
  4. Step 4: Simplify right side
    665,979,666.90x = 655,100,222,761,830,784
  5. Step 5: Solve for x
    x = 655,100,222,761,830,784/665,979,666.90
  6. Step 6: Final answer
    x = 983,663,999.55

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Double scale
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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.