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Finding the Fourth Proportional to 716,337.85, 988,548.56 and 394,072.46

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Solution

The fourth proportional to 716,337.85, 988,548.56 and 394,072.46 is: 543,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,337.85 : 988,548.56 = 394,072.46 : x
  2. Step 2: Convert to fraction form
    716,337.85/988,548.56 = 394,072.46/x
  3. Step 3: Cross multiply
    716,337.85x = 988,548.56 × 394,072.46
  4. Step 4: Simplify right side
    716,337.85x = 389,559,762,868.66
  5. Step 5: Solve for x
    x = 389,559,762,868.66/716,337.85
  6. Step 6: Final answer
    x = 543,821.27

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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.