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Finding the Fourth Proportional to 618,998.91, 928,476.50 and 169,712.57

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Solution

The fourth proportional to 618,998.91, 928,476.50 and 169,712.57 is: 254,562.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,998.91 : 928,476.50 = 169,712.57 : x
  2. Step 2: Convert to fraction form
    618,998.91/928,476.50 = 169,712.57/x
  3. Step 3: Cross multiply
    618,998.91x = 928,476.50 × 169,712.57
  4. Step 4: Simplify right side
    618,998.91x = 157,574,129,726.87
  5. Step 5: Solve for x
    x = 157,574,129,726.87/618,998.91
  6. Step 6: Final answer
    x = 254,562.85

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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.