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Finding the Fourth Proportional to 664,863.29, 917,545.73 and 406,659.29

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Solution

The fourth proportional to 664,863.29, 917,545.73 and 406,659.29 is: 561,210.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,863.29 : 917,545.73 = 406,659.29 : x
  2. Step 2: Convert to fraction form
    664,863.29/917,545.73 = 406,659.29/x
  3. Step 3: Cross multiply
    664,863.29x = 917,545.73 × 406,659.29
  4. Step 4: Simplify right side
    664,863.29x = 373,128,488,483.31
  5. Step 5: Solve for x
    x = 373,128,488,483.31/664,863.29
  6. Step 6: Final answer
    x = 561,210.85

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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.