Home / 725,881.91-1,001,742.73-399,220.18

Finding the Fourth Proportional to 725,881.91, 1,001,742.73 and 399,220.18

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Solution

The fourth proportional to 725,881.91, 1,001,742.73 and 399,220.18 is: 550,937.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,881.91 : 1,001,742.73 = 399,220.18 : x
  2. Step 2: Convert to fraction form
    725,881.91/1,001,742.73 = 399,220.18/x
  3. Step 3: Cross multiply
    725,881.91x = 1,001,742.73 × 399,220.18
  4. Step 4: Simplify right side
    725,881.91x = 399,915,909,481.88
  5. Step 5: Solve for x
    x = 399,915,909,481.88/725,881.91
  6. Step 6: Final answer
    x = 550,937.98

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Double scale
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Similar ratio
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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.