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Finding the Fourth Proportional to 454,449.60, 680,896.80 and 288,043.20

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Solution

The fourth proportional to 454,449.60, 680,896.80 and 288,043.20 is: 431,571.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,449.60 : 680,896.80 = 288,043.20 : x
  2. Step 2: Convert to fraction form
    454,449.60/680,896.80 = 288,043.20/x
  3. Step 3: Cross multiply
    454,449.60x = 680,896.80 × 288,043.20
  4. Step 4: Simplify right side
    454,449.60x = 196,127,693,141.76
  5. Step 5: Solve for x
    x = 196,127,693,141.76/454,449.60
  6. Step 6: Final answer
    x = 431,571.93

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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.