Home / 742,081.20-1,113,121.80-667,285.80

Finding the Fourth Proportional to 742,081.20, 1,113,121.80 and 667,285.80

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Solution

The fourth proportional to 742,081.20, 1,113,121.80 and 667,285.80 is: 1,000,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,081.20 : 1,113,121.80 = 667,285.80 : x
  2. Step 2: Convert to fraction form
    742,081.20/1,113,121.80 = 667,285.80/x
  3. Step 3: Cross multiply
    742,081.20x = 1,113,121.80 × 667,285.80
  4. Step 4: Simplify right side
    742,081.20x = 742,770,370,810.44
  5. Step 5: Solve for x
    x = 742,770,370,810.44/742,081.20
  6. Step 6: Final answer
    x = 1,000,928.70

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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.