Home / 755,515.64-1,042,649.87-428,851.55

Finding the Fourth Proportional to 755,515.64, 1,042,649.87 and 428,851.55

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Solution

The fourth proportional to 755,515.64, 1,042,649.87 and 428,851.55 is: 591,836.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,515.64 : 1,042,649.87 = 428,851.55 : x
  2. Step 2: Convert to fraction form
    755,515.64/1,042,649.87 = 428,851.55/x
  3. Step 3: Cross multiply
    755,515.64x = 1,042,649.87 × 428,851.55
  4. Step 4: Simplify right side
    755,515.64x = 447,142,012,856.80
  5. Step 5: Solve for x
    x = 447,142,012,856.80/755,515.64
  6. Step 6: Final answer
    x = 591,836.87

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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.