Home / 527,797.40-791,689.26-128,438.42

Finding the Fourth Proportional to 527,797.40, 791,689.26 and 128,438.42

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Solution

The fourth proportional to 527,797.40, 791,689.26 and 128,438.42 is: 192,655.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,797.40 : 791,689.26 = 128,438.42 : x
  2. Step 2: Convert to fraction form
    527,797.40/791,689.26 = 128,438.42/x
  3. Step 3: Cross multiply
    527,797.40x = 791,689.26 × 128,438.42
  4. Step 4: Simplify right side
    527,797.40x = 101,683,317,685.37
  5. Step 5: Solve for x
    x = 101,683,317,685.37/527,797.40
  6. Step 6: Final answer
    x = 192,655.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.