Home / 868,172.86-1,301,983.41-811,500.66

Finding the Fourth Proportional to 868,172.86, 1,301,983.41 and 811,500.66

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Solution

The fourth proportional to 868,172.86, 1,301,983.41 and 811,500.66 is: 1,216,993.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,172.86 : 1,301,983.41 = 811,500.66 : x
  2. Step 2: Convert to fraction form
    868,172.86/1,301,983.41 = 811,500.66/x
  3. Step 3: Cross multiply
    868,172.86x = 1,301,983.41 × 811,500.66
  4. Step 4: Simplify right side
    868,172.86x = 1,056,560,396,524.05
  5. Step 5: Solve for x
    x = 1,056,560,396,524.05/868,172.86
  6. Step 6: Final answer
    x = 1,216,993.12

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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.