Home / 728,999.19-1,093,387.88-279,931.55

Finding the Fourth Proportional to 728,999.19, 1,093,387.88 and 279,931.55

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Solution

The fourth proportional to 728,999.19, 1,093,387.88 and 279,931.55 is: 419,854.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,999.19 : 1,093,387.88 = 279,931.55 : x
  2. Step 2: Convert to fraction form
    728,999.19/1,093,387.88 = 279,931.55/x
  3. Step 3: Cross multiply
    728,999.19x = 1,093,387.88 × 279,931.55
  4. Step 4: Simplify right side
    728,999.19x = 306,073,759,232.50
  5. Step 5: Solve for x
    x = 306,073,759,232.50/728,999.19
  6. Step 6: Final answer
    x = 419,854.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.