Home / 1,313,412.72-1,968,154.32-1,188,987

Finding the Fourth Proportional to 1,313,412.72, 1,968,154.32 and 1,188,987

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Solution

The fourth proportional to 1,313,412.72, 1,968,154.32 and 1,188,987 is: 1,781,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,412.72 : 1,968,154.32 = 1,188,987 : x
  2. Step 2: Convert to fraction form
    1,313,412.72/1,968,154.32 = 1,188,987/x
  3. Step 3: Cross multiply
    1,313,412.72x = 1,968,154.32 × 1,188,987
  4. Step 4: Simplify right side
    1,313,412.72x = 2,340,109,900,473.84
  5. Step 5: Solve for x
    x = 2,340,109,900,473.84/1,313,412.72
  6. Step 6: Final answer
    x = 1,781,701.87

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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.