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Finding the Fourth Proportional to 868,863.20, 1,304,461.20 and 554,712.80

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Solution

The fourth proportional to 868,863.20, 1,304,461.20 and 554,712.80 is: 832,813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,863.20 : 1,304,461.20 = 554,712.80 : x
  2. Step 2: Convert to fraction form
    868,863.20/1,304,461.20 = 554,712.80/x
  3. Step 3: Cross multiply
    868,863.20x = 1,304,461.20 × 554,712.80
  4. Step 4: Simplify right side
    868,863.20x = 723,601,324,743.36
  5. Step 5: Solve for x
    x = 723,601,324,743.36/868,863.20
  6. Step 6: Final answer
    x = 832,813.87

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Double scale
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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.