Home / 725,319.83-1,000,963.91-398,626.92

Finding the Fourth Proportional to 725,319.83, 1,000,963.91 and 398,626.92

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Solution

The fourth proportional to 725,319.83, 1,000,963.91 and 398,626.92 is: 550,117.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,319.83 : 1,000,963.91 = 398,626.92 : x
  2. Step 2: Convert to fraction form
    725,319.83/1,000,963.91 = 398,626.92/x
  3. Step 3: Cross multiply
    725,319.83x = 1,000,963.91 × 398,626.92
  4. Step 4: Simplify right side
    725,319.83x = 399,011,161,471.03
  5. Step 5: Solve for x
    x = 399,011,161,471.03/725,319.83
  6. Step 6: Final answer
    x = 550,117.54

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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.