Home / 718,919.61-992,102.22-396,632.31

Finding the Fourth Proportional to 718,919.61, 992,102.22 and 396,632.31

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Solution

The fourth proportional to 718,919.61, 992,102.22 and 396,632.31 is: 547,348.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,919.61 : 992,102.22 = 396,632.31 : x
  2. Step 2: Convert to fraction form
    718,919.61/992,102.22 = 396,632.31/x
  3. Step 3: Cross multiply
    718,919.61x = 992,102.22 × 396,632.31
  4. Step 4: Simplify right side
    718,919.61x = 393,499,795,274.73
  5. Step 5: Solve for x
    x = 393,499,795,274.73/718,919.61
  6. Step 6: Final answer
    x = 547,348.81

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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.