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Finding the Fourth Proportional to 665,337, 918,165.06 and 363,531

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Solution

The fourth proportional to 665,337, 918,165.06 and 363,531 is: 501,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,337 : 918,165.06 = 363,531 : x
  2. Step 2: Convert to fraction form
    665,337/918,165.06 = 363,531/x
  3. Step 3: Cross multiply
    665,337x = 918,165.06 × 363,531
  4. Step 4: Simplify right side
    665,337x = 333,781,462,426.86
  5. Step 5: Solve for x
    x = 333,781,462,426.86/665,337
  6. Step 6: Final answer
    x = 501,672.78

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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.