Home / 743,879.47-1,115,399.22-680,401.80

Finding the Fourth Proportional to 743,879.47, 1,115,399.22 and 680,401.80

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Solution

The fourth proportional to 743,879.47, 1,115,399.22 and 680,401.80 is: 1,020,218.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,879.47 : 1,115,399.22 = 680,401.80 : x
  2. Step 2: Convert to fraction form
    743,879.47/1,115,399.22 = 680,401.80/x
  3. Step 3: Cross multiply
    743,879.47x = 1,115,399.22 × 680,401.80
  4. Step 4: Simplify right side
    743,879.47x = 758,919,637,006.60
  5. Step 5: Solve for x
    x = 758,919,637,006.60/743,879.47
  6. Step 6: Final answer
    x = 1,020,218.55

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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.