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Finding the Fourth Proportional to 674,761.77, 931,171.21 and 368,839.43

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Solution

The fourth proportional to 674,761.77, 931,171.21 and 368,839.43 is: 508,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,761.77 : 931,171.21 = 368,839.43 : x
  2. Step 2: Convert to fraction form
    674,761.77/931,171.21 = 368,839.43/x
  3. Step 3: Cross multiply
    674,761.77x = 931,171.21 × 368,839.43
  4. Step 4: Simplify right side
    674,761.77x = 343,452,656,508.46
  5. Step 5: Solve for x
    x = 343,452,656,508.46/674,761.77
  6. Step 6: Final answer
    x = 508,998.39

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1.5x scale

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.