Home / 725,809.56-1,001,621.14-399,143.64

Finding the Fourth Proportional to 725,809.56, 1,001,621.14 and 399,143.64

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Solution

The fourth proportional to 725,809.56, 1,001,621.14 and 399,143.64 is: 550,820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,809.56 : 1,001,621.14 = 399,143.64 : x
  2. Step 2: Convert to fraction form
    725,809.56/1,001,621.14 = 399,143.64/x
  3. Step 3: Cross multiply
    725,809.56x = 1,001,621.14 × 399,143.64
  4. Step 4: Simplify right side
    725,809.56x = 399,790,707,720.55
  5. Step 5: Solve for x
    x = 399,790,707,720.55/725,809.56
  6. Step 6: Final answer
    x = 550,820.39

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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.