Home / 780,314.61-1,170,471.87-219,349.11

Finding the Fourth Proportional to 780,314.61, 1,170,471.87 and 219,349.11

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Solution

The fourth proportional to 780,314.61, 1,170,471.87 and 219,349.11 is: 329,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,314.61 : 1,170,471.87 = 219,349.11 : x
  2. Step 2: Convert to fraction form
    780,314.61/1,170,471.87 = 219,349.11/x
  3. Step 3: Cross multiply
    780,314.61x = 1,170,471.87 × 219,349.11
  4. Step 4: Simplify right side
    780,314.61x = 256,741,962,964.54
  5. Step 5: Solve for x
    x = 256,741,962,964.54/780,314.61
  6. Step 6: Final answer
    x = 329,023.65

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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.