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Finding the Fourth Proportional to 988,493.88, 1,364,106.78 and 558,759

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Solution

The fourth proportional to 988,493.88, 1,364,106.78 and 558,759 is: 771,079.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,493.88 : 1,364,106.78 = 558,759 : x
  2. Step 2: Convert to fraction form
    988,493.88/1,364,106.78 = 558,759/x
  3. Step 3: Cross multiply
    988,493.88x = 1,364,106.78 × 558,759
  4. Step 4: Simplify right side
    988,493.88x = 762,206,940,286.02
  5. Step 5: Solve for x
    x = 762,206,940,286.02/988,493.88
  6. Step 6: Final answer
    x = 771,079.07

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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.