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Finding the Fourth Proportional to 611,141.44, 843,306.78 and 339,220.79

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Solution

The fourth proportional to 611,141.44, 843,306.78 and 339,220.79 is: 468,086.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,141.44 : 843,306.78 = 339,220.79 : x
  2. Step 2: Convert to fraction form
    611,141.44/843,306.78 = 339,220.79/x
  3. Step 3: Cross multiply
    611,141.44x = 843,306.78 × 339,220.79
  4. Step 4: Simplify right side
    611,141.44x = 286,067,192,123.96
  5. Step 5: Solve for x
    x = 286,067,192,123.96/611,141.44
  6. Step 6: Final answer
    x = 468,086.72

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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.