Home / 1,129,540.74-1,558,759.20-646,113.96

Finding the Fourth Proportional to 1,129,540.74, 1,558,759.20 and 646,113.96

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Solution

The fourth proportional to 1,129,540.74, 1,558,759.20 and 646,113.96 is: 891,633.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,540.74 : 1,558,759.20 = 646,113.96 : x
  2. Step 2: Convert to fraction form
    1,129,540.74/1,558,759.20 = 646,113.96/x
  3. Step 3: Cross multiply
    1,129,540.74x = 1,558,759.20 × 646,113.96
  4. Step 4: Simplify right side
    1,129,540.74x = 1,007,136,079,398.43
  5. Step 5: Solve for x
    x = 1,007,136,079,398.43/1,129,540.74
  6. Step 6: Final answer
    x = 891,633.25

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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.