Home / 725,772.60-1,086,326.10-515,820.60

Finding the Fourth Proportional to 725,772.60, 1,086,326.10 and 515,820.60

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Solution

The fourth proportional to 725,772.60, 1,086,326.10 and 515,820.60 is: 772,072.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,772.60 : 1,086,326.10 = 515,820.60 : x
  2. Step 2: Convert to fraction form
    725,772.60/1,086,326.10 = 515,820.60/x
  3. Step 3: Cross multiply
    725,772.60x = 1,086,326.10 × 515,820.60
  4. Step 4: Simplify right side
    725,772.60x = 560,349,380,697.66
  5. Step 5: Solve for x
    x = 560,349,380,697.66/725,772.60
  6. Step 6: Final answer
    x = 772,072.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.