Home / 911,939.80-1,367,909.70-838,456.60

Finding the Fourth Proportional to 911,939.80, 1,367,909.70 and 838,456.60

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Solution

The fourth proportional to 911,939.80, 1,367,909.70 and 838,456.60 is: 1,257,684.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,939.80 : 1,367,909.70 = 838,456.60 : x
  2. Step 2: Convert to fraction form
    911,939.80/1,367,909.70 = 838,456.60/x
  3. Step 3: Cross multiply
    911,939.80x = 1,367,909.70 × 838,456.60
  4. Step 4: Simplify right side
    911,939.80x = 1,146,932,916,169.02
  5. Step 5: Solve for x
    x = 1,146,932,916,169.02/911,939.80
  6. Step 6: Final answer
    x = 1,257,684.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.