Home / 725,836.05-1,001,670-399,128.35

Finding the Fourth Proportional to 725,836.05, 1,001,670 and 399,128.35

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Solution

The fourth proportional to 725,836.05, 1,001,670 and 399,128.35 is: 550,806.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,836.05 : 1,001,670 = 399,128.35 : x
  2. Step 2: Convert to fraction form
    725,836.05/1,001,670 = 399,128.35/x
  3. Step 3: Cross multiply
    725,836.05x = 1,001,670 × 399,128.35
  4. Step 4: Simplify right side
    725,836.05x = 399,794,894,344.50
  5. Step 5: Solve for x
    x = 399,794,894,344.50/725,836.05
  6. Step 6: Final answer
    x = 550,806.06

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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.