Home / 527,480.71-791,214.89-128,121.85

Finding the Fourth Proportional to 527,480.71, 791,214.89 and 128,121.85

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Solution

The fourth proportional to 527,480.71, 791,214.89 and 128,121.85 is: 192,181.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,480.71 : 791,214.89 = 128,121.85 : x
  2. Step 2: Convert to fraction form
    527,480.71/791,214.89 = 128,121.85/x
  3. Step 3: Cross multiply
    527,480.71x = 791,214.89 × 128,121.85
  4. Step 4: Simplify right side
    527,480.71x = 101,371,915,802.76
  5. Step 5: Solve for x
    x = 101,371,915,802.76/527,480.71
  6. Step 6: Final answer
    x = 192,181.28

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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.