Home / 821,178.01-1,230,049.34-660,383.29

Finding the Fourth Proportional to 821,178.01, 1,230,049.34 and 660,383.29

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Solution

The fourth proportional to 821,178.01, 1,230,049.34 and 660,383.29 is: 989,193.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,178.01 : 1,230,049.34 = 660,383.29 : x
  2. Step 2: Convert to fraction form
    821,178.01/1,230,049.34 = 660,383.29/x
  3. Step 3: Cross multiply
    821,178.01x = 1,230,049.34 × 660,383.29
  4. Step 4: Simplify right side
    821,178.01x = 812,304,023,634.49
  5. Step 5: Solve for x
    x = 812,304,023,634.49/821,178.01
  6. Step 6: Final answer
    x = 989,193.59

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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.