Home / 635,439.20-876,686.78-406,130.66

Finding the Fourth Proportional to 635,439.20, 876,686.78 and 406,130.66

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Solution

The fourth proportional to 635,439.20, 876,686.78 and 406,130.66 is: 560,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,439.20 : 876,686.78 = 406,130.66 : x
  2. Step 2: Convert to fraction form
    635,439.20/876,686.78 = 406,130.66/x
  3. Step 3: Cross multiply
    635,439.20x = 876,686.78 × 406,130.66
  4. Step 4: Simplify right side
    635,439.20x = 356,049,380,574.68
  5. Step 5: Solve for x
    x = 356,049,380,574.68/635,439.20
  6. Step 6: Final answer
    x = 560,320.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.