Home / 712,193.40-982,838.61-389,898.18

Finding the Fourth Proportional to 712,193.40, 982,838.61 and 389,898.18

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Solution

The fourth proportional to 712,193.40, 982,838.61 and 389,898.18 is: 538,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,193.40 : 982,838.61 = 389,898.18 : x
  2. Step 2: Convert to fraction form
    712,193.40/982,838.61 = 389,898.18/x
  3. Step 3: Cross multiply
    712,193.40x = 982,838.61 × 389,898.18
  4. Step 4: Simplify right side
    712,193.40x = 383,206,985,272.73
  5. Step 5: Solve for x
    x = 383,206,985,272.73/712,193.40
  6. Step 6: Final answer
    x = 538,065.90

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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.