Home / 816,551.15-1,126,903.65-489,876.44

Finding the Fourth Proportional to 816,551.15, 1,126,903.65 and 489,876.44

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Solution

The fourth proportional to 816,551.15, 1,126,903.65 and 489,876.44 is: 676,067.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,551.15 : 1,126,903.65 = 489,876.44 : x
  2. Step 2: Convert to fraction form
    816,551.15/1,126,903.65 = 489,876.44/x
  3. Step 3: Cross multiply
    816,551.15x = 1,126,903.65 × 489,876.44
  4. Step 4: Simplify right side
    816,551.15x = 552,043,542,650.49
  5. Step 5: Solve for x
    x = 552,043,542,650.49/816,551.15
  6. Step 6: Final answer
    x = 676,067.31

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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.