Home / 712,221.44-982,868.45-389,961.54

Finding the Fourth Proportional to 712,221.44, 982,868.45 and 389,961.54

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Solution

The fourth proportional to 712,221.44, 982,868.45 and 389,961.54 is: 538,148.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,221.44 : 982,868.45 = 389,961.54 : x
  2. Step 2: Convert to fraction form
    712,221.44/982,868.45 = 389,961.54/x
  3. Step 3: Cross multiply
    712,221.44x = 982,868.45 × 389,961.54
  4. Step 4: Simplify right side
    712,221.44x = 383,280,892,429.61
  5. Step 5: Solve for x
    x = 383,280,892,429.61/712,221.44
  6. Step 6: Final answer
    x = 538,148.49

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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.