Home / 725,615.30-1,001,349.75-398,933.87

Finding the Fourth Proportional to 725,615.30, 1,001,349.75 and 398,933.87

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Solution

The fourth proportional to 725,615.30, 1,001,349.75 and 398,933.87 is: 550,529.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,615.30 : 1,001,349.75 = 398,933.87 : x
  2. Step 2: Convert to fraction form
    725,615.30/1,001,349.75 = 398,933.87/x
  3. Step 3: Cross multiply
    725,615.30x = 1,001,349.75 × 398,933.87
  4. Step 4: Simplify right side
    725,615.30x = 399,472,327,734.64
  5. Step 5: Solve for x
    x = 399,472,327,734.64/725,615.30
  6. Step 6: Final answer
    x = 550,529.09

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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.