Home / 725,836.29-1,001,670.34-399,128.59

Finding the Fourth Proportional to 725,836.29, 1,001,670.34 and 399,128.59

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Solution

The fourth proportional to 725,836.29, 1,001,670.34 and 399,128.59 is: 550,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,836.29 : 1,001,670.34 = 399,128.59 : x
  2. Step 2: Convert to fraction form
    725,836.29/1,001,670.34 = 399,128.59/x
  3. Step 3: Cross multiply
    725,836.29x = 1,001,670.34 × 399,128.59
  4. Step 4: Simplify right side
    725,836.29x = 399,795,270,449.02
  5. Step 5: Solve for x
    x = 399,795,270,449.02/725,836.29
  6. Step 6: Final answer
    x = 550,806.40

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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.