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Finding the Fourth Proportional to 613,368.75, 920,882.82 and 423,356.73

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Solution

The fourth proportional to 613,368.75, 920,882.82 and 423,356.73 is: 635,607.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,368.75 : 920,882.82 = 423,356.73 : x
  2. Step 2: Convert to fraction form
    613,368.75/920,882.82 = 423,356.73/x
  3. Step 3: Cross multiply
    613,368.75x = 920,882.82 × 423,356.73
  4. Step 4: Simplify right side
    613,368.75x = 389,861,937,522.66
  5. Step 5: Solve for x
    x = 389,861,937,522.66/613,368.75
  6. Step 6: Final answer
    x = 635,607.76

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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.