Home / 687,864.12-1,031,445.24-404,109.12

Finding the Fourth Proportional to 687,864.12, 1,031,445.24 and 404,109.12

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Solution

The fourth proportional to 687,864.12, 1,031,445.24 and 404,109.12 is: 605,957.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,864.12 : 1,031,445.24 = 404,109.12 : x
  2. Step 2: Convert to fraction form
    687,864.12/1,031,445.24 = 404,109.12/x
  3. Step 3: Cross multiply
    687,864.12x = 1,031,445.24 × 404,109.12
  4. Step 4: Simplify right side
    687,864.12x = 416,816,428,264.59
  5. Step 5: Solve for x
    x = 416,816,428,264.59/687,864.12
  6. Step 6: Final answer
    x = 605,957.51

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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.