Home / 725,659.30-1,001,421.82-398,986.12

Finding the Fourth Proportional to 725,659.30, 1,001,421.82 and 398,986.12

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Solution

The fourth proportional to 725,659.30, 1,001,421.82 and 398,986.12 is: 550,607.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,659.30 : 1,001,421.82 = 398,986.12 : x
  2. Step 2: Convert to fraction form
    725,659.30/1,001,421.82 = 398,986.12/x
  3. Step 3: Cross multiply
    725,659.30x = 1,001,421.82 × 398,986.12
  4. Step 4: Simplify right side
    725,659.30x = 399,553,406,445.14
  5. Step 5: Solve for x
    x = 399,553,406,445.14/725,659.30
  6. Step 6: Final answer
    x = 550,607.44

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Double scale
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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.