Home / 979,540.80-1,467,342.90-660,676.20

Finding the Fourth Proportional to 979,540.80, 1,467,342.90 and 660,676.20

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Solution

The fourth proportional to 979,540.80, 1,467,342.90 and 660,676.20 is: 989,686.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,540.80 : 1,467,342.90 = 660,676.20 : x
  2. Step 2: Convert to fraction form
    979,540.80/1,467,342.90 = 660,676.20/x
  3. Step 3: Cross multiply
    979,540.80x = 1,467,342.90 × 660,676.20
  4. Step 4: Simplify right side
    979,540.80x = 969,438,531,268.98
  5. Step 5: Solve for x
    x = 969,438,531,268.98/979,540.80
  6. Step 6: Final answer
    x = 989,686.73

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1.5x scale

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.