Home / 1,371,040.08-1,891,809.72-861,379.44

Finding the Fourth Proportional to 1,371,040.08, 1,891,809.72 and 861,379.44

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Solution

The fourth proportional to 1,371,040.08, 1,891,809.72 and 861,379.44 is: 1,188,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371,040.08 : 1,891,809.72 = 861,379.44 : x
  2. Step 2: Convert to fraction form
    1,371,040.08/1,891,809.72 = 861,379.44/x
  3. Step 3: Cross multiply
    1,371,040.08x = 1,891,809.72 × 861,379.44
  4. Step 4: Simplify right side
    1,371,040.08x = 1,629,565,997,200.16
  5. Step 5: Solve for x
    x = 1,629,565,997,200.16/1,371,040.08
  6. Step 6: Final answer
    x = 1,188,561.90

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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.