Home / 645,307.28-968,157.84-329,985.68

Finding the Fourth Proportional to 645,307.28, 968,157.84 and 329,985.68

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Solution

The fourth proportional to 645,307.28, 968,157.84 and 329,985.68 is: 495,079.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,307.28 : 968,157.84 = 329,985.68 : x
  2. Step 2: Convert to fraction form
    645,307.28/968,157.84 = 329,985.68/x
  3. Step 3: Cross multiply
    645,307.28x = 968,157.84 × 329,985.68
  4. Step 4: Simplify right side
    645,307.28x = 319,478,223,179.73
  5. Step 5: Solve for x
    x = 319,478,223,179.73/645,307.28
  6. Step 6: Final answer
    x = 495,079.22

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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.