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Finding the Fourth Proportional to 716,464.23, 988,720.61 and 394,167.41

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Solution

The fourth proportional to 716,464.23, 988,720.61 and 394,167.41 is: 543,951.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,464.23 : 988,720.61 = 394,167.41 : x
  2. Step 2: Convert to fraction form
    716,464.23/988,720.61 = 394,167.41/x
  3. Step 3: Cross multiply
    716,464.23x = 988,720.61 × 394,167.41
  4. Step 4: Simplify right side
    716,464.23x = 389,721,441,626.72
  5. Step 5: Solve for x
    x = 389,721,441,626.72/716,464.23
  6. Step 6: Final answer
    x = 543,951.01

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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.