Home / 890,631.60-1,335,947.40-859,138.80

Finding the Fourth Proportional to 890,631.60, 1,335,947.40 and 859,138.80

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Solution

The fourth proportional to 890,631.60, 1,335,947.40 and 859,138.80 is: 1,288,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,631.60 : 1,335,947.40 = 859,138.80 : x
  2. Step 2: Convert to fraction form
    890,631.60/1,335,947.40 = 859,138.80/x
  3. Step 3: Cross multiply
    890,631.60x = 1,335,947.40 × 859,138.80
  4. Step 4: Simplify right side
    890,631.60x = 1,147,764,246,099.12
  5. Step 5: Solve for x
    x = 1,147,764,246,099.12/890,631.60
  6. Step 6: Final answer
    x = 1,288,708.20

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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.