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Finding the Fourth Proportional to 539,071.20, 807,537.60 and 472,586.40

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Solution

The fourth proportional to 539,071.20, 807,537.60 and 472,586.40 is: 707,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,071.20 : 807,537.60 = 472,586.40 : x
  2. Step 2: Convert to fraction form
    539,071.20/807,537.60 = 472,586.40/x
  3. Step 3: Cross multiply
    539,071.20x = 807,537.60 × 472,586.40
  4. Step 4: Simplify right side
    539,071.20x = 381,631,287,248.64
  5. Step 5: Solve for x
    x = 381,631,287,248.64/539,071.20
  6. Step 6: Final answer
    x = 707,942.27

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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.