Home / 727,870.45-1,004,447.76-396,729.23

Finding the Fourth Proportional to 727,870.45, 1,004,447.76 and 396,729.23

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Solution

The fourth proportional to 727,870.45, 1,004,447.76 and 396,729.23 is: 547,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,870.45 : 1,004,447.76 = 396,729.23 : x
  2. Step 2: Convert to fraction form
    727,870.45/1,004,447.76 = 396,729.23/x
  3. Step 3: Cross multiply
    727,870.45x = 1,004,447.76 × 396,729.23
  4. Step 4: Simplify right side
    727,870.45x = 398,493,789,480.88
  5. Step 5: Solve for x
    x = 398,493,789,480.88/727,870.45
  6. Step 6: Final answer
    x = 547,479.01

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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.