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Finding the Fourth Proportional to 539,289.20, 807,864.60 and 472,804.40

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Solution

The fourth proportional to 539,289.20, 807,864.60 and 472,804.40 is: 708,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,289.20 : 807,864.60 = 472,804.40 : x
  2. Step 2: Convert to fraction form
    539,289.20/807,864.60 = 472,804.40/x
  3. Step 3: Cross multiply
    539,289.20x = 807,864.60 × 472,804.40
  4. Step 4: Simplify right side
    539,289.20x = 381,961,937,484.24
  5. Step 5: Solve for x
    x = 381,961,937,484.24/539,289.20
  6. Step 6: Final answer
    x = 708,269.21

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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.