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Finding the Fourth Proportional to 520,046.80, 780,415.80 and 295,406.80

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Solution

The fourth proportional to 520,046.80, 780,415.80 and 295,406.80 is: 443,306.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,046.80 : 780,415.80 = 295,406.80 : x
  2. Step 2: Convert to fraction form
    520,046.80/780,415.80 = 295,406.80/x
  3. Step 3: Cross multiply
    520,046.80x = 780,415.80 × 295,406.80
  4. Step 4: Simplify right side
    520,046.80x = 230,540,134,147.44
  5. Step 5: Solve for x
    x = 230,540,134,147.44/520,046.80
  6. Step 6: Final answer
    x = 443,306.51

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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.