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Finding the Fourth Proportional to 486,487.20, 727,981.20 and 329,023.20

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Solution

The fourth proportional to 486,487.20, 727,981.20 and 329,023.20 is: 492,351.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,487.20 : 727,981.20 = 329,023.20 : x
  2. Step 2: Convert to fraction form
    486,487.20/727,981.20 = 329,023.20/x
  3. Step 3: Cross multiply
    486,487.20x = 727,981.20 × 329,023.20
  4. Step 4: Simplify right side
    486,487.20x = 239,522,703,963.84
  5. Step 5: Solve for x
    x = 239,522,703,963.84/486,487.20
  6. Step 6: Final answer
    x = 492,351.50

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1.5x scale

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.