Home / 1,187,785.14-1,638,757.86-671,488.98

Finding the Fourth Proportional to 1,187,785.14, 1,638,757.86 and 671,488.98

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Solution

The fourth proportional to 1,187,785.14, 1,638,757.86 and 671,488.98 is: 926,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,785.14 : 1,638,757.86 = 671,488.98 : x
  2. Step 2: Convert to fraction form
    1,187,785.14/1,638,757.86 = 671,488.98/x
  3. Step 3: Cross multiply
    1,187,785.14x = 1,638,757.86 × 671,488.98
  4. Step 4: Simplify right side
    1,187,785.14x = 1,100,407,843,878.38
  5. Step 5: Solve for x
    x = 1,100,407,843,878.38/1,187,785.14
  6. Step 6: Final answer
    x = 926,436.78

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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.