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Finding the Fourth Proportional to 618,494.88, 927,171.47 and 429,044.63

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Solution

The fourth proportional to 618,494.88, 927,171.47 and 429,044.63 is: 643,170.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,494.88 : 927,171.47 = 429,044.63 : x
  2. Step 2: Convert to fraction form
    618,494.88/927,171.47 = 429,044.63/x
  3. Step 3: Cross multiply
    618,494.88x = 927,171.47 × 429,044.63
  4. Step 4: Simplify right side
    618,494.88x = 397,797,946,459.65
  5. Step 5: Solve for x
    x = 397,797,946,459.65/618,494.88
  6. Step 6: Final answer
    x = 643,170.96

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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.