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Finding the Fourth Proportional to 520,085.20, 778,399.80 and 377,525.20

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Solution

The fourth proportional to 520,085.20, 778,399.80 and 377,525.20 is: 565,033.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,085.20 : 778,399.80 = 377,525.20 : x
  2. Step 2: Convert to fraction form
    520,085.20/778,399.80 = 377,525.20/x
  3. Step 3: Cross multiply
    520,085.20x = 778,399.80 × 377,525.20
  4. Step 4: Simplify right side
    520,085.20x = 293,865,540,174.96
  5. Step 5: Solve for x
    x = 293,865,540,174.96/520,085.20
  6. Step 6: Final answer
    x = 565,033.46

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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.