Home / 1,399,816.28-2,102,253.72-1,287,288.92

Finding the Fourth Proportional to 1,399,816.28, 2,102,253.72 and 1,287,288.92

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Solution

The fourth proportional to 1,399,816.28, 2,102,253.72 and 1,287,288.92 is: 1,933,259.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,816.28 : 2,102,253.72 = 1,287,288.92 : x
  2. Step 2: Convert to fraction form
    1,399,816.28/2,102,253.72 = 1,287,288.92/x
  3. Step 3: Cross multiply
    1,399,816.28x = 2,102,253.72 × 1,287,288.92
  4. Step 4: Simplify right side
    1,399,816.28x = 2,706,207,920,784.78
  5. Step 5: Solve for x
    x = 2,706,207,920,784.78/1,399,816.28
  6. Step 6: Final answer
    x = 1,933,259.36

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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.