Home / 725,808.56-1,001,619.76-399,142.64

Finding the Fourth Proportional to 725,808.56, 1,001,619.76 and 399,142.64

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Solution

The fourth proportional to 725,808.56, 1,001,619.76 and 399,142.64 is: 550,819.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,808.56 : 1,001,619.76 = 399,142.64 : x
  2. Step 2: Convert to fraction form
    725,808.56/1,001,619.76 = 399,142.64/x
  3. Step 3: Cross multiply
    725,808.56x = 1,001,619.76 × 399,142.64
  4. Step 4: Simplify right side
    725,808.56x = 399,789,155,282.57
  5. Step 5: Solve for x
    x = 399,789,155,282.57/725,808.56
  6. Step 6: Final answer
    x = 550,819.01

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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.