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Finding the Fourth Proportional to 857,441.60, 1,285,773.60 and 324,785.60

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Solution

The fourth proportional to 857,441.60, 1,285,773.60 and 324,785.60 is: 487,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,441.60 : 1,285,773.60 = 324,785.60 : x
  2. Step 2: Convert to fraction form
    857,441.60/1,285,773.60 = 324,785.60/x
  3. Step 3: Cross multiply
    857,441.60x = 1,285,773.60 × 324,785.60
  4. Step 4: Simplify right side
    857,441.60x = 417,600,750,140.16
  5. Step 5: Solve for x
    x = 417,600,750,140.16/857,441.60
  6. Step 6: Final answer
    x = 487,031.13

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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.