Home / 820,140.70-1,230,211.05-654,252.70

Finding the Fourth Proportional to 820,140.70, 1,230,211.05 and 654,252.70

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Solution

The fourth proportional to 820,140.70, 1,230,211.05 and 654,252.70 is: 981,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,140.70 : 1,230,211.05 = 654,252.70 : x
  2. Step 2: Convert to fraction form
    820,140.70/1,230,211.05 = 654,252.70/x
  3. Step 3: Cross multiply
    820,140.70x = 1,230,211.05 × 654,252.70
  4. Step 4: Simplify right side
    820,140.70x = 804,868,901,032.34
  5. Step 5: Solve for x
    x = 804,868,901,032.34/820,140.70
  6. Step 6: Final answer
    x = 981,379.05

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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.