Home / 725,719.64-1,001,518.81-399,057.53

Finding the Fourth Proportional to 725,719.64, 1,001,518.81 and 399,057.53

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Solution

The fourth proportional to 725,719.64, 1,001,518.81 and 399,057.53 is: 550,713.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,719.64 : 1,001,518.81 = 399,057.53 : x
  2. Step 2: Convert to fraction form
    725,719.64/1,001,518.81 = 399,057.53/x
  3. Step 3: Cross multiply
    725,719.64x = 1,001,518.81 × 399,057.53
  4. Step 4: Simplify right side
    725,719.64x = 399,663,616,561.90
  5. Step 5: Solve for x
    x = 399,663,616,561.90/725,719.64
  6. Step 6: Final answer
    x = 550,713.52

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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.