Home / 725,660.82-1,001,423.88-398,987.64

Finding the Fourth Proportional to 725,660.82, 1,001,423.88 and 398,987.64

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Solution

The fourth proportional to 725,660.82, 1,001,423.88 and 398,987.64 is: 550,609.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,660.82 : 1,001,423.88 = 398,987.64 : x
  2. Step 2: Convert to fraction form
    725,660.82/1,001,423.88 = 398,987.64/x
  3. Step 3: Cross multiply
    725,660.82x = 1,001,423.88 × 398,987.64
  4. Step 4: Simplify right side
    725,660.82x = 399,555,750,520.84
  5. Step 5: Solve for x
    x = 399,555,750,520.84/725,660.82
  6. Step 6: Final answer
    x = 550,609.51

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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.