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Finding the Fourth Proportional to 716,960.62, 989,441.18 and 394,667.29

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Solution

The fourth proportional to 716,960.62, 989,441.18 and 394,667.29 is: 544,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,960.62 : 989,441.18 = 394,667.29 : x
  2. Step 2: Convert to fraction form
    716,960.62/989,441.18 = 394,667.29/x
  3. Step 3: Cross multiply
    716,960.62x = 989,441.18 × 394,667.29
  4. Step 4: Simplify right side
    716,960.62x = 390,500,067,638.07
  5. Step 5: Solve for x
    x = 390,500,067,638.07/716,960.62
  6. Step 6: Final answer
    x = 544,660.42

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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.