Home / 859,442.20-1,289,163.30-499,243.30

Finding the Fourth Proportional to 859,442.20, 1,289,163.30 and 499,243.30

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Solution

The fourth proportional to 859,442.20, 1,289,163.30 and 499,243.30 is: 748,864.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,442.20 : 1,289,163.30 = 499,243.30 : x
  2. Step 2: Convert to fraction form
    859,442.20/1,289,163.30 = 499,243.30/x
  3. Step 3: Cross multiply
    859,442.20x = 1,289,163.30 × 499,243.30
  4. Step 4: Simplify right side
    859,442.20x = 643,606,140,130.89
  5. Step 5: Solve for x
    x = 643,606,140,130.89/859,442.20
  6. Step 6: Final answer
    x = 748,864.95

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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.