Home / 645,278.78-968,115.09-329,957.18

Finding the Fourth Proportional to 645,278.78, 968,115.09 and 329,957.18

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Solution

The fourth proportional to 645,278.78, 968,115.09 and 329,957.18 is: 495,036.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,278.78 : 968,115.09 = 329,957.18 : x
  2. Step 2: Convert to fraction form
    645,278.78/968,115.09 = 329,957.18/x
  3. Step 3: Cross multiply
    645,278.78x = 968,115.09 × 329,957.18
  4. Step 4: Simplify right side
    645,278.78x = 319,436,525,011.85
  5. Step 5: Solve for x
    x = 319,436,525,011.85/645,278.78
  6. Step 6: Final answer
    x = 495,036.46

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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.