Home / 1,079,655.40-1,490,919.78-722,996.20

Finding the Fourth Proportional to 1,079,655.40, 1,490,919.78 and 722,996.20

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Solution

The fourth proportional to 1,079,655.40, 1,490,919.78 and 722,996.20 is: 998,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,655.40 : 1,490,919.78 = 722,996.20 : x
  2. Step 2: Convert to fraction form
    1,079,655.40/1,490,919.78 = 722,996.20/x
  3. Step 3: Cross multiply
    1,079,655.40x = 1,490,919.78 × 722,996.20
  4. Step 4: Simplify right side
    1,079,655.40x = 1,077,929,335,444.84
  5. Step 5: Solve for x
    x = 1,077,929,335,444.84/1,079,655.40
  6. Step 6: Final answer
    x = 998,401.28

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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.