Home / 711,634.68-982,047.24-389,340.54

Finding the Fourth Proportional to 711,634.68, 982,047.24 and 389,340.54

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Solution

The fourth proportional to 711,634.68, 982,047.24 and 389,340.54 is: 537,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,634.68 : 982,047.24 = 389,340.54 : x
  2. Step 2: Convert to fraction form
    711,634.68/982,047.24 = 389,340.54/x
  3. Step 3: Cross multiply
    711,634.68x = 982,047.24 × 389,340.54
  4. Step 4: Simplify right side
    711,634.68x = 382,350,802,727.11
  5. Step 5: Solve for x
    x = 382,350,802,727.11/711,634.68
  6. Step 6: Final answer
    x = 537,285.23

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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.