Home / 520,123.20-779,601.60-220,552.80

Finding the Fourth Proportional to 520,123.20, 779,601.60 and 220,552.80

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Solution

The fourth proportional to 520,123.20, 779,601.60 and 220,552.80 is: 330,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,123.20 : 779,601.60 = 220,552.80 : x
  2. Step 2: Convert to fraction form
    520,123.20/779,601.60 = 220,552.80/x
  3. Step 3: Cross multiply
    520,123.20x = 779,601.60 × 220,552.80
  4. Step 4: Simplify right side
    520,123.20x = 171,943,315,764.48
  5. Step 5: Solve for x
    x = 171,943,315,764.48/520,123.20
  6. Step 6: Final answer
    x = 330,581.90

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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.