Home / 878,680.52-1,317,546.85-398,646.39

Finding the Fourth Proportional to 878,680.52, 1,317,546.85 and 398,646.39

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Solution

The fourth proportional to 878,680.52, 1,317,546.85 and 398,646.39 is: 597,754.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,680.52 : 1,317,546.85 = 398,646.39 : x
  2. Step 2: Convert to fraction form
    878,680.52/1,317,546.85 = 398,646.39/x
  3. Step 3: Cross multiply
    878,680.52x = 1,317,546.85 × 398,646.39
  4. Step 4: Simplify right side
    878,680.52x = 525,235,288,422.60
  5. Step 5: Solve for x
    x = 525,235,288,422.60/878,680.52
  6. Step 6: Final answer
    x = 597,754.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.