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Finding the Fourth Proportional to 667,731.52, 921,470.30 and 361,807.66

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Solution

The fourth proportional to 667,731.52, 921,470.30 and 361,807.66 is: 499,295.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,731.52 : 921,470.30 = 361,807.66 : x
  2. Step 2: Convert to fraction form
    667,731.52/921,470.30 = 361,807.66/x
  3. Step 3: Cross multiply
    667,731.52x = 921,470.30 × 361,807.66
  4. Step 4: Simplify right side
    667,731.52x = 333,395,010,698.82
  5. Step 5: Solve for x
    x = 333,395,010,698.82/667,731.52
  6. Step 6: Final answer
    x = 499,295.00

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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.