Home / 721,354.28-1,082,248.02-215,931.69

Finding the Fourth Proportional to 721,354.28, 1,082,248.02 and 215,931.69

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Solution

The fourth proportional to 721,354.28, 1,082,248.02 and 215,931.69 is: 323,962.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,354.28 : 1,082,248.02 = 215,931.69 : x
  2. Step 2: Convert to fraction form
    721,354.28/1,082,248.02 = 215,931.69/x
  3. Step 3: Cross multiply
    721,354.28x = 1,082,248.02 × 215,931.69
  4. Step 4: Simplify right side
    721,354.28x = 233,691,643,957.75
  5. Step 5: Solve for x
    x = 233,691,643,957.75/721,354.28
  6. Step 6: Final answer
    x = 323,962.37

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Double scale
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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.