Home / 765,049.12-1,055,753.08-420,864.93

Finding the Fourth Proportional to 765,049.12, 1,055,753.08 and 420,864.93

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Solution

The fourth proportional to 765,049.12, 1,055,753.08 and 420,864.93 is: 580,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,049.12 : 1,055,753.08 = 420,864.93 : x
  2. Step 2: Convert to fraction form
    765,049.12/1,055,753.08 = 420,864.93/x
  3. Step 3: Cross multiply
    765,049.12x = 1,055,753.08 × 420,864.93
  4. Step 4: Simplify right side
    765,049.12x = 444,329,446,111.48
  5. Step 5: Solve for x
    x = 444,329,446,111.48/765,049.12
  6. Step 6: Final answer
    x = 580,785.51

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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.