Home / 818,724.80-1,228,087.20-781,983.20

Finding the Fourth Proportional to 818,724.80, 1,228,087.20 and 781,983.20

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Solution

The fourth proportional to 818,724.80, 1,228,087.20 and 781,983.20 is: 1,172,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,724.80 : 1,228,087.20 = 781,983.20 : x
  2. Step 2: Convert to fraction form
    818,724.80/1,228,087.20 = 781,983.20/x
  3. Step 3: Cross multiply
    818,724.80x = 1,228,087.20 × 781,983.20
  4. Step 4: Simplify right side
    818,724.80x = 960,343,558,535.04
  5. Step 5: Solve for x
    x = 960,343,558,535.04/818,724.80
  6. Step 6: Final answer
    x = 1,172,974.80

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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.