Home / 1,311,195.60-1,966,793.40-905,288.40

Finding the Fourth Proportional to 1,311,195.60, 1,966,793.40 and 905,288.40

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Solution

The fourth proportional to 1,311,195.60, 1,966,793.40 and 905,288.40 is: 1,357,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,195.60 : 1,966,793.40 = 905,288.40 : x
  2. Step 2: Convert to fraction form
    1,311,195.60/1,966,793.40 = 905,288.40/x
  3. Step 3: Cross multiply
    1,311,195.60x = 1,966,793.40 × 905,288.40
  4. Step 4: Simplify right side
    1,311,195.60x = 1,780,515,250,216.56
  5. Step 5: Solve for x
    x = 1,780,515,250,216.56/1,311,195.60
  6. Step 6: Final answer
    x = 1,357,932.60

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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.