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Finding the Fourth Proportional to 659,545.66, 988,649.83 and 260,467.57

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Solution

The fourth proportional to 659,545.66, 988,649.83 and 260,467.57 is: 390,437.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,545.66 : 988,649.83 = 260,467.57 : x
  2. Step 2: Convert to fraction form
    659,545.66/988,649.83 = 260,467.57/x
  3. Step 3: Cross multiply
    659,545.66x = 988,649.83 × 260,467.57
  4. Step 4: Simplify right side
    659,545.66x = 257,511,218,801.01
  5. Step 5: Solve for x
    x = 257,511,218,801.01/659,545.66
  6. Step 6: Final answer
    x = 390,437.29

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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.