Home / 858,498.40-1,287,747.60-543,311.20

Finding the Fourth Proportional to 858,498.40, 1,287,747.60 and 543,311.20

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Solution

The fourth proportional to 858,498.40, 1,287,747.60 and 543,311.20 is: 814,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,498.40 : 1,287,747.60 = 543,311.20 : x
  2. Step 2: Convert to fraction form
    858,498.40/1,287,747.60 = 543,311.20/x
  3. Step 3: Cross multiply
    858,498.40x = 1,287,747.60 × 543,311.20
  4. Step 4: Simplify right side
    858,498.40x = 699,647,693,853.12
  5. Step 5: Solve for x
    x = 699,647,693,853.12/858,498.40
  6. Step 6: Final answer
    x = 814,966.80

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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.