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Finding the Fourth Proportional to 868,052.10, 1,302,078.15 and 532,128.90

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Solution

The fourth proportional to 868,052.10, 1,302,078.15 and 532,128.90 is: 798,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,052.10 : 1,302,078.15 = 532,128.90 : x
  2. Step 2: Convert to fraction form
    868,052.10/1,302,078.15 = 532,128.90/x
  3. Step 3: Cross multiply
    868,052.10x = 1,302,078.15 × 532,128.90
  4. Step 4: Simplify right side
    868,052.10x = 692,873,413,673.54
  5. Step 5: Solve for x
    x = 692,873,413,673.54/868,052.10
  6. Step 6: Final answer
    x = 798,193.35

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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.