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Finding the Fourth Proportional to 664,877.96, 917,598 and 396,605.96

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Solution

The fourth proportional to 664,877.96, 917,598 and 396,605.96 is: 547,355.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,877.96 : 917,598 = 396,605.96 : x
  2. Step 2: Convert to fraction form
    664,877.96/917,598 = 396,605.96/x
  3. Step 3: Cross multiply
    664,877.96x = 917,598 × 396,605.96
  4. Step 4: Simplify right side
    664,877.96x = 363,924,835,684.08
  5. Step 5: Solve for x
    x = 363,924,835,684.08/664,877.96
  6. Step 6: Final answer
    x = 547,355.84

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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.