Home / 858,487.90-1,287,731.85-543,300.70

Finding the Fourth Proportional to 858,487.90, 1,287,731.85 and 543,300.70

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Solution

The fourth proportional to 858,487.90, 1,287,731.85 and 543,300.70 is: 814,951.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,487.90 : 1,287,731.85 = 543,300.70 : x
  2. Step 2: Convert to fraction form
    858,487.90/1,287,731.85 = 543,300.70/x
  3. Step 3: Cross multiply
    858,487.90x = 1,287,731.85 × 543,300.70
  4. Step 4: Simplify right side
    858,487.90x = 699,625,615,517.30
  5. Step 5: Solve for x
    x = 699,625,615,517.30/858,487.90
  6. Step 6: Final answer
    x = 814,951.05

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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.