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Finding the Fourth Proportional to 667,950.58, 921,146.61 and 426,389.14

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Solution

The fourth proportional to 667,950.58, 921,146.61 and 426,389.14 is: 588,017.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,950.58 : 921,146.61 = 426,389.14 : x
  2. Step 2: Convert to fraction form
    667,950.58/921,146.61 = 426,389.14/x
  3. Step 3: Cross multiply
    667,950.58x = 921,146.61 × 426,389.14
  4. Step 4: Simplify right side
    667,950.58x = 392,766,910,851.82
  5. Step 5: Solve for x
    x = 392,766,910,851.82/667,950.58
  6. Step 6: Final answer
    x = 588,017.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.