Home / 645,280.78-968,118.10-329,959.18

Finding the Fourth Proportional to 645,280.78, 968,118.10 and 329,959.18

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Solution

The fourth proportional to 645,280.78, 968,118.10 and 329,959.18 is: 495,039.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,280.78 : 968,118.10 = 329,959.18 : x
  2. Step 2: Convert to fraction form
    645,280.78/968,118.10 = 329,959.18/x
  3. Step 3: Cross multiply
    645,280.78x = 968,118.10 × 329,959.18
  4. Step 4: Simplify right side
    645,280.78x = 319,439,454,419.16
  5. Step 5: Solve for x
    x = 319,439,454,419.16/645,280.78
  6. Step 6: Final answer
    x = 495,039.47

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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.