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Finding the Fourth Proportional to 520,131.62, 780,304.36 and 235,685.54

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Solution

The fourth proportional to 520,131.62, 780,304.36 and 235,685.54 is: 353,576.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,131.62 : 780,304.36 = 235,685.54 : x
  2. Step 2: Convert to fraction form
    520,131.62/780,304.36 = 235,685.54/x
  3. Step 3: Cross multiply
    520,131.62x = 780,304.36 × 235,685.54
  4. Step 4: Simplify right side
    520,131.62x = 183,906,454,450.95
  5. Step 5: Solve for x
    x = 183,906,454,450.95/520,131.62
  6. Step 6: Final answer
    x = 353,576.76

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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.