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Finding the Fourth Proportional to 680,684.31, 939,344.45 and 374,761.89

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Solution

The fourth proportional to 680,684.31, 939,344.45 and 374,761.89 is: 517,171.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,684.31 : 939,344.45 = 374,761.89 : x
  2. Step 2: Convert to fraction form
    680,684.31/939,344.45 = 374,761.89/x
  3. Step 3: Cross multiply
    680,684.31x = 939,344.45 × 374,761.89
  4. Step 4: Simplify right side
    680,684.31x = 352,030,499,569.20
  5. Step 5: Solve for x
    x = 352,030,499,569.20/680,684.31
  6. Step 6: Final answer
    x = 517,171.46

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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.