Home / 1,315,115.43-1,816,112.66-1,243,468.20

Finding the Fourth Proportional to 1,315,115.43, 1,816,112.66 and 1,243,468.20

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Solution

The fourth proportional to 1,315,115.43, 1,816,112.66 and 1,243,468.20 is: 1,717,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,115.43 : 1,816,112.66 = 1,243,468.20 : x
  2. Step 2: Convert to fraction form
    1,315,115.43/1,816,112.66 = 1,243,468.20/x
  3. Step 3: Cross multiply
    1,315,115.43x = 1,816,112.66 × 1,243,468.20
  4. Step 4: Simplify right side
    1,315,115.43x = 2,258,278,340,327.41
  5. Step 5: Solve for x
    x = 2,258,278,340,327.41/1,315,115.43
  6. Step 6: Final answer
    x = 1,717,171.20

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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.