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Finding the Fourth Proportional to 1,229,591.20, 1,844,386.80 and 868,784.80

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Solution

The fourth proportional to 1,229,591.20, 1,844,386.80 and 868,784.80 is: 1,303,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,591.20 : 1,844,386.80 = 868,784.80 : x
  2. Step 2: Convert to fraction form
    1,229,591.20/1,844,386.80 = 868,784.80/x
  3. Step 3: Cross multiply
    1,229,591.20x = 1,844,386.80 × 868,784.80
  4. Step 4: Simplify right side
    1,229,591.20x = 1,602,375,217,160.64
  5. Step 5: Solve for x
    x = 1,602,375,217,160.64/1,229,591.20
  6. Step 6: Final answer
    x = 1,303,177.20

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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.