Home / 1,392,115.20-2,088,172.80-762,259.20

Finding the Fourth Proportional to 1,392,115.20, 2,088,172.80 and 762,259.20

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Solution

The fourth proportional to 1,392,115.20, 2,088,172.80 and 762,259.20 is: 1,143,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,115.20 : 2,088,172.80 = 762,259.20 : x
  2. Step 2: Convert to fraction form
    1,392,115.20/2,088,172.80 = 762,259.20/x
  3. Step 3: Cross multiply
    1,392,115.20x = 2,088,172.80 × 762,259.20
  4. Step 4: Simplify right side
    1,392,115.20x = 1,591,728,927,989.76
  5. Step 5: Solve for x
    x = 1,591,728,927,989.76/1,392,115.20
  6. Step 6: Final answer
    x = 1,143,388.80

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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.