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Finding the Fourth Proportional to 716,757.32, 989,104.10 and 394,467.24

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Solution

The fourth proportional to 716,757.32, 989,104.10 and 394,467.24 is: 544,353.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,757.32 : 989,104.10 = 394,467.24 : x
  2. Step 2: Convert to fraction form
    716,757.32/989,104.10 = 394,467.24/x
  3. Step 3: Cross multiply
    716,757.32x = 989,104.10 × 394,467.24
  4. Step 4: Simplify right side
    716,757.32x = 390,169,164,399.68
  5. Step 5: Solve for x
    x = 390,169,164,399.68/716,757.32
  6. Step 6: Final answer
    x = 544,353.23

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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.