Home / 1,187,072.97-1,638,191.19-728,440.93

Finding the Fourth Proportional to 1,187,072.97, 1,638,191.19 and 728,440.93

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Solution

The fourth proportional to 1,187,072.97, 1,638,191.19 and 728,440.93 is: 1,005,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,072.97 : 1,638,191.19 = 728,440.93 : x
  2. Step 2: Convert to fraction form
    1,187,072.97/1,638,191.19 = 728,440.93/x
  3. Step 3: Cross multiply
    1,187,072.97x = 1,638,191.19 × 728,440.93
  4. Step 4: Simplify right side
    1,187,072.97x = 1,193,325,513,961.41
  5. Step 5: Solve for x
    x = 1,193,325,513,961.41/1,187,072.97
  6. Step 6: Final answer
    x = 1,005,267.19

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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.