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Finding the Fourth Proportional to 524,337.30, 785,339.55 and 431,025.30

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Solution

The fourth proportional to 524,337.30, 785,339.55 and 431,025.30 is: 645,579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,337.30 : 785,339.55 = 431,025.30 : x
  2. Step 2: Convert to fraction form
    524,337.30/785,339.55 = 431,025.30/x
  3. Step 3: Cross multiply
    524,337.30x = 785,339.55 × 431,025.30
  4. Step 4: Simplify right side
    524,337.30x = 338,501,215,140.62
  5. Step 5: Solve for x
    x = 338,501,215,140.62/524,337.30
  6. Step 6: Final answer
    x = 645,579.12

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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.