Home / 715,275.12-1,073,187.81-315,633.54

Finding the Fourth Proportional to 715,275.12, 1,073,187.81 and 315,633.54

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Solution

The fourth proportional to 715,275.12, 1,073,187.81 and 315,633.54 is: 473,571.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,275.12 : 1,073,187.81 = 315,633.54 : x
  2. Step 2: Convert to fraction form
    715,275.12/1,073,187.81 = 315,633.54/x
  3. Step 3: Cross multiply
    715,275.12x = 1,073,187.81 × 315,633.54
  4. Step 4: Simplify right side
    715,275.12x = 338,734,067,555.15
  5. Step 5: Solve for x
    x = 338,734,067,555.15/715,275.12
  6. Step 6: Final answer
    x = 473,571.72

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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.