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Finding the Fourth Proportional to 613,838.75, 920,449.65 and 357,753.74

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Solution

The fourth proportional to 613,838.75, 920,449.65 and 357,753.74 is: 536,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,838.75 : 920,449.65 = 357,753.74 : x
  2. Step 2: Convert to fraction form
    613,838.75/920,449.65 = 357,753.74/x
  3. Step 3: Cross multiply
    613,838.75x = 920,449.65 × 357,753.74
  4. Step 4: Simplify right side
    613,838.75x = 329,294,304,769.19
  5. Step 5: Solve for x
    x = 329,294,304,769.19/613,838.75
  6. Step 6: Final answer
    x = 536,450.83

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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.