Home / 765,016.64-1,055,689.68-420,830.75

Finding the Fourth Proportional to 765,016.64, 1,055,689.68 and 420,830.75

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Solution

The fourth proportional to 765,016.64, 1,055,689.68 and 420,830.75 is: 580,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,016.64 : 1,055,689.68 = 420,830.75 : x
  2. Step 2: Convert to fraction form
    765,016.64/1,055,689.68 = 420,830.75/x
  3. Step 3: Cross multiply
    765,016.64x = 1,055,689.68 × 420,830.75
  4. Step 4: Simplify right side
    765,016.64x = 444,266,675,713.57
  5. Step 5: Solve for x
    x = 444,266,675,713.57/765,016.64
  6. Step 6: Final answer
    x = 580,728.12

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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.