Home / 745,405.20-1,118,107.80-664,534.80

Finding the Fourth Proportional to 745,405.20, 1,118,107.80 and 664,534.80

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Solution

The fourth proportional to 745,405.20, 1,118,107.80 and 664,534.80 is: 996,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,405.20 : 1,118,107.80 = 664,534.80 : x
  2. Step 2: Convert to fraction form
    745,405.20/1,118,107.80 = 664,534.80/x
  3. Step 3: Cross multiply
    745,405.20x = 1,118,107.80 × 664,534.80
  4. Step 4: Simplify right side
    745,405.20x = 743,021,543,251.44
  5. Step 5: Solve for x
    x = 743,021,543,251.44/745,405.20
  6. Step 6: Final answer
    x = 996,802.20

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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.