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Finding the Fourth Proportional to 625,030.80, 935,944.80 and 432,638.64

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Solution

The fourth proportional to 625,030.80, 935,944.80 and 432,638.64 is: 647,849.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,030.80 : 935,944.80 = 432,638.64 : x
  2. Step 2: Convert to fraction form
    625,030.80/935,944.80 = 432,638.64/x
  3. Step 3: Cross multiply
    625,030.80x = 935,944.80 × 432,638.64
  4. Step 4: Simplify right side
    625,030.80x = 404,925,885,387.07
  5. Step 5: Solve for x
    x = 404,925,885,387.07/625,030.80
  6. Step 6: Final answer
    x = 647,849.49

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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.