Home / 725,235.85-1,000,948.77-419,498.11

Finding the Fourth Proportional to 725,235.85, 1,000,948.77 and 419,498.11

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Solution

The fourth proportional to 725,235.85, 1,000,948.77 and 419,498.11 is: 578,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,235.85 : 1,000,948.77 = 419,498.11 : x
  2. Step 2: Convert to fraction form
    725,235.85/1,000,948.77 = 419,498.11/x
  3. Step 3: Cross multiply
    725,235.85x = 1,000,948.77 × 419,498.11
  4. Step 4: Simplify right side
    725,235.85x = 419,896,117,221.83
  5. Step 5: Solve for x
    x = 419,896,117,221.83/725,235.85
  6. Step 6: Final answer
    x = 578,978.71

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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.