Home / 711,873.21-982,371.90-389,576.85

Finding the Fourth Proportional to 711,873.21, 982,371.90 and 389,576.85

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Solution

The fourth proportional to 711,873.21, 982,371.90 and 389,576.85 is: 537,608.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,873.21 : 982,371.90 = 389,576.85 : x
  2. Step 2: Convert to fraction form
    711,873.21/982,371.90 = 389,576.85/x
  3. Step 3: Cross multiply
    711,873.21x = 982,371.90 × 389,576.85
  4. Step 4: Simplify right side
    711,873.21x = 382,709,350,330.52
  5. Step 5: Solve for x
    x = 382,709,350,330.52/711,873.21
  6. Step 6: Final answer
    x = 537,608.87

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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.