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Finding the Fourth Proportional to 712,168.44, 982,792.38 and 389,877.54

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Solution

The fourth proportional to 712,168.44, 982,792.38 and 389,877.54 is: 538,030.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,168.44 : 982,792.38 = 389,877.54 : x
  2. Step 2: Convert to fraction form
    712,168.44/982,792.38 = 389,877.54/x
  3. Step 3: Cross multiply
    712,168.44x = 982,792.38 × 389,877.54
  4. Step 4: Simplify right side
    712,168.44x = 383,168,675,445.15
  5. Step 5: Solve for x
    x = 383,168,675,445.15/712,168.44
  6. Step 6: Final answer
    x = 538,030.97

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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.