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Finding the Fourth Proportional to 628,635.30, 941,570.55 and 545,691.30

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Solution

The fourth proportional to 628,635.30, 941,570.55 and 545,691.30 is: 817,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,635.30 : 941,570.55 = 545,691.30 : x
  2. Step 2: Convert to fraction form
    628,635.30/941,570.55 = 545,691.30/x
  3. Step 3: Cross multiply
    628,635.30x = 941,570.55 × 545,691.30
  4. Step 4: Simplify right side
    628,635.30x = 513,806,857,471.22
  5. Step 5: Solve for x
    x = 513,806,857,471.22/628,635.30
  6. Step 6: Final answer
    x = 817,336.95

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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.