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Finding the Fourth Proportional to 870,002.10, 1,305,003.15 and 801,767.70

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Solution

The fourth proportional to 870,002.10, 1,305,003.15 and 801,767.70 is: 1,202,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,002.10 : 1,305,003.15 = 801,767.70 : x
  2. Step 2: Convert to fraction form
    870,002.10/1,305,003.15 = 801,767.70/x
  3. Step 3: Cross multiply
    870,002.10x = 1,305,003.15 × 801,767.70
  4. Step 4: Simplify right side
    870,002.10x = 1,046,309,374,068.25
  5. Step 5: Solve for x
    x = 1,046,309,374,068.25/870,002.10
  6. Step 6: Final answer
    x = 1,202,651.55

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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.