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Finding the Fourth Proportional to 780,351.82, 1,170,527.82 and 219,386.32

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Solution

The fourth proportional to 780,351.82, 1,170,527.82 and 219,386.32 is: 329,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,351.82 : 1,170,527.82 = 219,386.32 : x
  2. Step 2: Convert to fraction form
    780,351.82/1,170,527.82 = 219,386.32/x
  3. Step 3: Cross multiply
    780,351.82x = 1,170,527.82 × 219,386.32
  4. Step 4: Simplify right side
    780,351.82x = 256,797,790,887.42
  5. Step 5: Solve for x
    x = 256,797,790,887.42/780,351.82
  6. Step 6: Final answer
    x = 329,079.51

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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.