Home / 858,252.30-1,287,378.45-499,037.55

Finding the Fourth Proportional to 858,252.30, 1,287,378.45 and 499,037.55

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Solution

The fourth proportional to 858,252.30, 1,287,378.45 and 499,037.55 is: 748,556.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,252.30 : 1,287,378.45 = 499,037.55 : x
  2. Step 2: Convert to fraction form
    858,252.30/1,287,378.45 = 499,037.55/x
  3. Step 3: Cross multiply
    858,252.30x = 1,287,378.45 × 499,037.55
  4. Step 4: Simplify right side
    858,252.30x = 642,450,187,610.80
  5. Step 5: Solve for x
    x = 642,450,187,610.80/858,252.30
  6. Step 6: Final answer
    x = 748,556.33

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Double scale
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Similar ratio
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1.5x scale

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.