Home / 853,138.70-1,177,401.03-490,679.90

Finding the Fourth Proportional to 853,138.70, 1,177,401.03 and 490,679.90

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Solution

The fourth proportional to 853,138.70, 1,177,401.03 and 490,679.90 is: 677,178.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,138.70 : 1,177,401.03 = 490,679.90 : x
  2. Step 2: Convert to fraction form
    853,138.70/1,177,401.03 = 490,679.90/x
  3. Step 3: Cross multiply
    853,138.70x = 1,177,401.03 × 490,679.90
  4. Step 4: Simplify right side
    853,138.70x = 577,727,019,660.30
  5. Step 5: Solve for x
    x = 577,727,019,660.30/853,138.70
  6. Step 6: Final answer
    x = 677,178.31

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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.