Home / 767,517.66-1,059,176.88-428,007.78

Finding the Fourth Proportional to 767,517.66, 1,059,176.88 and 428,007.78

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Solution

The fourth proportional to 767,517.66, 1,059,176.88 and 428,007.78 is: 590,652.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,517.66 : 1,059,176.88 = 428,007.78 : x
  2. Step 2: Convert to fraction form
    767,517.66/1,059,176.88 = 428,007.78/x
  3. Step 3: Cross multiply
    767,517.66x = 1,059,176.88 × 428,007.78
  4. Step 4: Simplify right side
    767,517.66x = 453,335,945,036.13
  5. Step 5: Solve for x
    x = 453,335,945,036.13/767,517.66
  6. Step 6: Final answer
    x = 590,652.14

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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.