Home / 979,939.80-1,469,909.70-644,016.60

Finding the Fourth Proportional to 979,939.80, 1,469,909.70 and 644,016.60

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Solution

The fourth proportional to 979,939.80, 1,469,909.70 and 644,016.60 is: 966,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,939.80 : 1,469,909.70 = 644,016.60 : x
  2. Step 2: Convert to fraction form
    979,939.80/1,469,909.70 = 644,016.60/x
  3. Step 3: Cross multiply
    979,939.80x = 1,469,909.70 × 644,016.60
  4. Step 4: Simplify right side
    979,939.80x = 946,646,247,301.02
  5. Step 5: Solve for x
    x = 946,646,247,301.02/979,939.80
  6. Step 6: Final answer
    x = 966,024.90

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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.