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Finding the Fourth Proportional to 379,614.44, 523,948.02 and 315,890.12

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Solution

The fourth proportional to 379,614.44, 523,948.02 and 315,890.12 is: 435,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,614.44 : 523,948.02 = 315,890.12 : x
  2. Step 2: Convert to fraction form
    379,614.44/523,948.02 = 315,890.12/x
  3. Step 3: Cross multiply
    379,614.44x = 523,948.02 × 315,890.12
  4. Step 4: Simplify right side
    379,614.44x = 165,510,002,911.56
  5. Step 5: Solve for x
    x = 165,510,002,911.56/379,614.44
  6. Step 6: Final answer
    x = 435,995.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.