Home / 711,648.57-982,074.42-389,359.95

Finding the Fourth Proportional to 711,648.57, 982,074.42 and 389,359.95

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Solution

The fourth proportional to 711,648.57, 982,074.42 and 389,359.95 is: 537,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,648.57 : 982,074.42 = 389,359.95 : x
  2. Step 2: Convert to fraction form
    711,648.57/982,074.42 = 389,359.95/x
  3. Step 3: Cross multiply
    711,648.57x = 982,074.42 × 389,359.95
  4. Step 4: Simplify right side
    711,648.57x = 382,380,447,067.48
  5. Step 5: Solve for x
    x = 382,380,447,067.48/711,648.57
  6. Step 6: Final answer
    x = 537,316.40

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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.