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Finding the Fourth Proportional to 539,662.28, 744,821.46 and 313,439

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Solution

The fourth proportional to 539,662.28, 744,821.46 and 313,439 is: 432,596.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,662.28 : 744,821.46 = 313,439 : x
  2. Step 2: Convert to fraction form
    539,662.28/744,821.46 = 313,439/x
  3. Step 3: Cross multiply
    539,662.28x = 744,821.46 × 313,439
  4. Step 4: Simplify right side
    539,662.28x = 233,456,093,600.94
  5. Step 5: Solve for x
    x = 233,456,093,600.94/539,662.28
  6. Step 6: Final answer
    x = 432,596.65

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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.