Home / 712,060.72-982,645.24-389,791.40

Finding the Fourth Proportional to 712,060.72, 982,645.24 and 389,791.40

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Solution

The fourth proportional to 712,060.72, 982,645.24 and 389,791.40 is: 537,912.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,060.72 : 982,645.24 = 389,791.40 : x
  2. Step 2: Convert to fraction form
    712,060.72/982,645.24 = 389,791.40/x
  3. Step 3: Cross multiply
    712,060.72x = 982,645.24 × 389,791.40
  4. Step 4: Simplify right side
    712,060.72x = 383,026,663,802.94
  5. Step 5: Solve for x
    x = 383,026,663,802.94/712,060.72
  6. Step 6: Final answer
    x = 537,912.92

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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.