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Finding the Fourth Proportional to 539,026.40, 807,859.20 and 272,860.40

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Solution

The fourth proportional to 539,026.40, 807,859.20 and 272,860.40 is: 408,946.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,026.40 : 807,859.20 = 272,860.40 : x
  2. Step 2: Convert to fraction form
    539,026.40/807,859.20 = 272,860.40/x
  3. Step 3: Cross multiply
    539,026.40x = 807,859.20 × 272,860.40
  4. Step 4: Simplify right side
    539,026.40x = 220,432,784,455.68
  5. Step 5: Solve for x
    x = 220,432,784,455.68/539,026.40
  6. Step 6: Final answer
    x = 408,946.17

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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.