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Finding the Fourth Proportional to 665,677.71, 918,635.22 and 363,871.71

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Solution

The fourth proportional to 665,677.71, 918,635.22 and 363,871.71 is: 502,142.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,677.71 : 918,635.22 = 363,871.71 : x
  2. Step 2: Convert to fraction form
    665,677.71/918,635.22 = 363,871.71/x
  3. Step 3: Cross multiply
    665,677.71x = 918,635.22 × 363,871.71
  4. Step 4: Simplify right side
    665,677.71x = 334,265,368,367.63
  5. Step 5: Solve for x
    x = 334,265,368,367.63/665,677.71
  6. Step 6: Final answer
    x = 502,142.95

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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.