Home / 520,177.20-779,682.60-220,606.80

Finding the Fourth Proportional to 520,177.20, 779,682.60 and 220,606.80

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Solution

The fourth proportional to 520,177.20, 779,682.60 and 220,606.80 is: 330,662.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,177.20 : 779,682.60 = 220,606.80 : x
  2. Step 2: Convert to fraction form
    520,177.20/779,682.60 = 220,606.80/x
  3. Step 3: Cross multiply
    520,177.20x = 779,682.60 × 220,606.80
  4. Step 4: Simplify right side
    520,177.20x = 172,003,283,401.68
  5. Step 5: Solve for x
    x = 172,003,283,401.68/520,177.20
  6. Step 6: Final answer
    x = 330,662.87

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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.