Home / 1,288,480.44-1,778,185.28-715,520.60

Finding the Fourth Proportional to 1,288,480.44, 1,778,185.28 and 715,520.60

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Solution

The fourth proportional to 1,288,480.44, 1,778,185.28 and 715,520.60 is: 987,464.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,480.44 : 1,778,185.28 = 715,520.60 : x
  2. Step 2: Convert to fraction form
    1,288,480.44/1,778,185.28 = 715,520.60/x
  3. Step 3: Cross multiply
    1,288,480.44x = 1,778,185.28 × 715,520.60
  4. Step 4: Simplify right side
    1,288,480.44x = 1,272,328,198,456.77
  5. Step 5: Solve for x
    x = 1,272,328,198,456.77/1,288,480.44
  6. Step 6: Final answer
    x = 987,464.12

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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.