Home / 645,279.78-968,116.59-329,958.18

Finding the Fourth Proportional to 645,279.78, 968,116.59 and 329,958.18

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Solution

The fourth proportional to 645,279.78, 968,116.59 and 329,958.18 is: 495,037.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,279.78 : 968,116.59 = 329,958.18 : x
  2. Step 2: Convert to fraction form
    645,279.78/968,116.59 = 329,958.18/x
  3. Step 3: Cross multiply
    645,279.78x = 968,116.59 × 329,958.18
  4. Step 4: Simplify right side
    645,279.78x = 319,437,988,064.21
  5. Step 5: Solve for x
    x = 319,437,988,064.21/645,279.78
  6. Step 6: Final answer
    x = 495,037.96

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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.