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Finding the Fourth Proportional to 553,770.57, 764,203.40 and 299,121.76

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Solution

The fourth proportional to 553,770.57, 764,203.40 and 299,121.76 is: 412,788.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,770.57 : 764,203.40 = 299,121.76 : x
  2. Step 2: Convert to fraction form
    553,770.57/764,203.40 = 299,121.76/x
  3. Step 3: Cross multiply
    553,770.57x = 764,203.40 × 299,121.76
  4. Step 4: Simplify right side
    553,770.57x = 228,589,866,005.98
  5. Step 5: Solve for x
    x = 228,589,866,005.98/553,770.57
  6. Step 6: Final answer
    x = 412,788.04

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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.