Home / 755,630.69-1,042,691.08-428,839.64

Finding the Fourth Proportional to 755,630.69, 1,042,691.08 and 428,839.64

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Solution

The fourth proportional to 755,630.69, 1,042,691.08 and 428,839.64 is: 591,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,630.69 : 1,042,691.08 = 428,839.64 : x
  2. Step 2: Convert to fraction form
    755,630.69/1,042,691.08 = 428,839.64/x
  3. Step 3: Cross multiply
    755,630.69x = 1,042,691.08 × 428,839.64
  4. Step 4: Simplify right side
    755,630.69x = 447,147,260,020.76
  5. Step 5: Solve for x
    x = 447,147,260,020.76/755,630.69
  6. Step 6: Final answer
    x = 591,753.70

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1.5x scale

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.