Home / 725,672.07-1,001,439.42-398,998.89

Finding the Fourth Proportional to 725,672.07, 1,001,439.42 and 398,998.89

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Solution

The fourth proportional to 725,672.07, 1,001,439.42 and 398,998.89 is: 550,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,672.07 : 1,001,439.42 = 398,998.89 : x
  2. Step 2: Convert to fraction form
    725,672.07/1,001,439.42 = 398,998.89/x
  3. Step 3: Cross multiply
    725,672.07x = 1,001,439.42 × 398,998.89
  4. Step 4: Simplify right side
    725,672.07x = 399,573,216,982.24
  5. Step 5: Solve for x
    x = 399,573,216,982.24/725,672.07
  6. Step 6: Final answer
    x = 550,625.05

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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.