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Finding the Fourth Proportional to 613,301.20, 919,951.80 and 276,721.90

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Solution

The fourth proportional to 613,301.20, 919,951.80 and 276,721.90 is: 415,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,301.20 : 919,951.80 = 276,721.90 : x
  2. Step 2: Convert to fraction form
    613,301.20/919,951.80 = 276,721.90/x
  3. Step 3: Cross multiply
    613,301.20x = 919,951.80 × 276,721.90
  4. Step 4: Simplify right side
    613,301.20x = 254,570,810,004.42
  5. Step 5: Solve for x
    x = 254,570,810,004.42/613,301.20
  6. Step 6: Final answer
    x = 415,082.85

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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.