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Finding the Fourth Proportional to 524,123.40, 784,370.70 and 313,912.20

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Solution

The fourth proportional to 524,123.40, 784,370.70 and 313,912.20 is: 469,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,123.40 : 784,370.70 = 313,912.20 : x
  2. Step 2: Convert to fraction form
    524,123.40/784,370.70 = 313,912.20/x
  3. Step 3: Cross multiply
    524,123.40x = 784,370.70 × 313,912.20
  4. Step 4: Simplify right side
    524,123.40x = 246,223,532,052.54
  5. Step 5: Solve for x
    x = 246,223,532,052.54/524,123.40
  6. Step 6: Final answer
    x = 469,781.60

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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.