Home / 711,872.72-982,371.21-389,576.35

Finding the Fourth Proportional to 711,872.72, 982,371.21 and 389,576.35

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Solution

The fourth proportional to 711,872.72, 982,371.21 and 389,576.35 is: 537,608.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,872.72 : 982,371.21 = 389,576.35 : x
  2. Step 2: Convert to fraction form
    711,872.72/982,371.21 = 389,576.35/x
  3. Step 3: Cross multiply
    711,872.72x = 982,371.21 × 389,576.35
  4. Step 4: Simplify right side
    711,872.72x = 382,708,585,425.03
  5. Step 5: Solve for x
    x = 382,708,585,425.03/711,872.72
  6. Step 6: Final answer
    x = 537,608.17

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1.5x scale

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.