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Finding the Fourth Proportional to 477,956.40, 715,897.80 and 425,425.20

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Solution

The fourth proportional to 477,956.40, 715,897.80 and 425,425.20 is: 637,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,956.40 : 715,897.80 = 425,425.20 : x
  2. Step 2: Convert to fraction form
    477,956.40/715,897.80 = 425,425.20/x
  3. Step 3: Cross multiply
    477,956.40x = 715,897.80 × 425,425.20
  4. Step 4: Simplify right side
    477,956.40x = 304,560,964,744.56
  5. Step 5: Solve for x
    x = 304,560,964,744.56/477,956.40
  6. Step 6: Final answer
    x = 637,214.95

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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.