Home / 807,778.92-1,114,581.38-485,371.38

Finding the Fourth Proportional to 807,778.92, 1,114,581.38 and 485,371.38

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Solution

The fourth proportional to 807,778.92, 1,114,581.38 and 485,371.38 is: 669,720.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,778.92 : 1,114,581.38 = 485,371.38 : x
  2. Step 2: Convert to fraction form
    807,778.92/1,114,581.38 = 485,371.38/x
  3. Step 3: Cross multiply
    807,778.92x = 1,114,581.38 × 485,371.38
  4. Step 4: Simplify right side
    807,778.92x = 540,985,902,532.90
  5. Step 5: Solve for x
    x = 540,985,902,532.90/807,778.92
  6. Step 6: Final answer
    x = 669,720.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.