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Finding the Fourth Proportional to 539,015.40, 807,842.70 and 272,849.40

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Solution

The fourth proportional to 539,015.40, 807,842.70 and 272,849.40 is: 408,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,015.40 : 807,842.70 = 272,849.40 : x
  2. Step 2: Convert to fraction form
    539,015.40/807,842.70 = 272,849.40/x
  3. Step 3: Cross multiply
    539,015.40x = 807,842.70 × 272,849.40
  4. Step 4: Simplify right side
    539,015.40x = 220,419,395,989.38
  5. Step 5: Solve for x
    x = 220,419,395,989.38/539,015.40
  6. Step 6: Final answer
    x = 408,929.68

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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.