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Finding the Fourth Proportional to 680,100.73, 938,538.97 and 374,170.52

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Solution

The fourth proportional to 680,100.73, 938,538.97 and 374,170.52 is: 516,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,100.73 : 938,538.97 = 374,170.52 : x
  2. Step 2: Convert to fraction form
    680,100.73/938,538.97 = 374,170.52/x
  3. Step 3: Cross multiply
    680,100.73x = 938,538.97 × 374,170.52
  4. Step 4: Simplify right side
    680,100.73x = 351,173,615,856.09
  5. Step 5: Solve for x
    x = 351,173,615,856.09/680,100.73
  6. Step 6: Final answer
    x = 516,355.30

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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.