Home / 818,724.30-1,228,086.45-781,982.70

Finding the Fourth Proportional to 818,724.30, 1,228,086.45 and 781,982.70

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Solution

The fourth proportional to 818,724.30, 1,228,086.45 and 781,982.70 is: 1,172,974.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,724.30 : 1,228,086.45 = 781,982.70 : x
  2. Step 2: Convert to fraction form
    818,724.30/1,228,086.45 = 781,982.70/x
  3. Step 3: Cross multiply
    818,724.30x = 1,228,086.45 × 781,982.70
  4. Step 4: Simplify right side
    818,724.30x = 960,342,358,004.42
  5. Step 5: Solve for x
    x = 960,342,358,004.42/818,724.30
  6. Step 6: Final answer
    x = 1,172,974.05

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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.