Home / 870,617.64-1,305,778.62-397,191.72

Finding the Fourth Proportional to 870,617.64, 1,305,778.62 and 397,191.72

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Solution

The fourth proportional to 870,617.64, 1,305,778.62 and 397,191.72 is: 595,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,617.64 : 1,305,778.62 = 397,191.72 : x
  2. Step 2: Convert to fraction form
    870,617.64/1,305,778.62 = 397,191.72/x
  3. Step 3: Cross multiply
    870,617.64x = 1,305,778.62 × 397,191.72
  4. Step 4: Simplify right side
    870,617.64x = 518,644,456,017.03
  5. Step 5: Solve for x
    x = 518,644,456,017.03/870,617.64
  6. Step 6: Final answer
    x = 595,720.13

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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.