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Finding the Fourth Proportional to 613,437.76, 920,304.28 and 258,553.28

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Solution

The fourth proportional to 613,437.76, 920,304.28 and 258,553.28 is: 387,892.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,437.76 : 920,304.28 = 258,553.28 : x
  2. Step 2: Convert to fraction form
    613,437.76/920,304.28 = 258,553.28/x
  3. Step 3: Cross multiply
    613,437.76x = 920,304.28 × 258,553.28
  4. Step 4: Simplify right side
    613,437.76x = 237,947,690,192.04
  5. Step 5: Solve for x
    x = 237,947,690,192.04/613,437.76
  6. Step 6: Final answer
    x = 387,892.15

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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.