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Finding the Fourth Proportional to 922,079.40, 1,383,119.10 and 839,410.80

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Solution

The fourth proportional to 922,079.40, 1,383,119.10 and 839,410.80 is: 1,259,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,079.40 : 1,383,119.10 = 839,410.80 : x
  2. Step 2: Convert to fraction form
    922,079.40/1,383,119.10 = 839,410.80/x
  3. Step 3: Cross multiply
    922,079.40x = 1,383,119.10 × 839,410.80
  4. Step 4: Simplify right side
    922,079.40x = 1,161,005,110,226.28
  5. Step 5: Solve for x
    x = 1,161,005,110,226.28/922,079.40
  6. Step 6: Final answer
    x = 1,259,116.20

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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.