Home / 527,721.75-791,583.26-128,359.76

Finding the Fourth Proportional to 527,721.75, 791,583.26 and 128,359.76

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Solution

The fourth proportional to 527,721.75, 791,583.26 and 128,359.76 is: 192,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,721.75 : 791,583.26 = 128,359.76 : x
  2. Step 2: Convert to fraction form
    527,721.75/791,583.26 = 128,359.76/x
  3. Step 3: Cross multiply
    527,721.75x = 791,583.26 × 128,359.76
  4. Step 4: Simplify right side
    527,721.75x = 101,607,432,673.90
  5. Step 5: Solve for x
    x = 101,607,432,673.90/527,721.75
  6. Step 6: Final answer
    x = 192,539.79

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1.5x scale

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.