Home / 871,147.52-1,307,654.40-685,456.64

Finding the Fourth Proportional to 871,147.52, 1,307,654.40 and 685,456.64

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Solution

The fourth proportional to 871,147.52, 1,307,654.40 and 685,456.64 is: 1,028,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,147.52 : 1,307,654.40 = 685,456.64 : x
  2. Step 2: Convert to fraction form
    871,147.52/1,307,654.40 = 685,456.64/x
  3. Step 3: Cross multiply
    871,147.52x = 1,307,654.40 × 685,456.64
  4. Step 4: Simplify right side
    871,147.52x = 896,340,391,305.22
  5. Step 5: Solve for x
    x = 896,340,391,305.22/871,147.52
  6. Step 6: Final answer
    x = 1,028,919.18

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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.