Home / 868,171.86-1,301,981.92-811,499.66

Finding the Fourth Proportional to 868,171.86, 1,301,981.92 and 811,499.66

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Solution

The fourth proportional to 868,171.86, 1,301,981.92 and 811,499.66 is: 1,216,991.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,171.86 : 1,301,981.92 = 811,499.66 : x
  2. Step 2: Convert to fraction form
    868,171.86/1,301,981.92 = 811,499.66/x
  3. Step 3: Cross multiply
    868,171.86x = 1,301,981.92 × 811,499.66
  4. Step 4: Simplify right side
    868,171.86x = 1,056,557,881,348.65
  5. Step 5: Solve for x
    x = 1,056,557,881,348.65/868,171.86
  6. Step 6: Final answer
    x = 1,216,991.63

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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.