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Finding the Fourth Proportional to 857,449.60, 1,285,785.60 and 324,793.60

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Solution

The fourth proportional to 857,449.60, 1,285,785.60 and 324,793.60 is: 487,043.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,449.60 : 1,285,785.60 = 324,793.60 : x
  2. Step 2: Convert to fraction form
    857,449.60/1,285,785.60 = 324,793.60/x
  3. Step 3: Cross multiply
    857,449.60x = 1,285,785.60 × 324,793.60
  4. Step 4: Simplify right side
    857,449.60x = 417,614,933,852.16
  5. Step 5: Solve for x
    x = 417,614,933,852.16/857,449.60
  6. Step 6: Final answer
    x = 487,043.13

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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.