Home / 520,121.20-778,453.80-377,561.20

Finding the Fourth Proportional to 520,121.20, 778,453.80 and 377,561.20

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Solution

The fourth proportional to 520,121.20, 778,453.80 and 377,561.20 is: 565,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,121.20 : 778,453.80 = 377,561.20 : x
  2. Step 2: Convert to fraction form
    520,121.20/778,453.80 = 377,561.20/x
  3. Step 3: Cross multiply
    520,121.20x = 778,453.80 × 377,561.20
  4. Step 4: Simplify right side
    520,121.20x = 293,913,950,872.56
  5. Step 5: Solve for x
    x = 293,913,950,872.56/520,121.20
  6. Step 6: Final answer
    x = 565,087.43

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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.