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Finding the Fourth Proportional to 667,497.91, 921,151.54 and 361,574.29

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Solution

The fourth proportional to 667,497.91, 921,151.54 and 361,574.29 is: 498,974.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,497.91 : 921,151.54 = 361,574.29 : x
  2. Step 2: Convert to fraction form
    667,497.91/921,151.54 = 361,574.29/x
  3. Step 3: Cross multiply
    667,497.91x = 921,151.54 × 361,574.29
  4. Step 4: Simplify right side
    667,497.91x = 333,064,714,057.91
  5. Step 5: Solve for x
    x = 333,064,714,057.91/667,497.91
  6. Step 6: Final answer
    x = 498,974.92

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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.