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Finding the Fourth Proportional to 553,977.87, 764,489.22 and 299,329.06

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Solution

The fourth proportional to 553,977.87, 764,489.22 and 299,329.06 is: 413,073.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,977.87 : 764,489.22 = 299,329.06 : x
  2. Step 2: Convert to fraction form
    553,977.87/764,489.22 = 299,329.06/x
  3. Step 3: Cross multiply
    553,977.87x = 764,489.22 × 299,329.06
  4. Step 4: Simplify right side
    553,977.87x = 228,833,835,780.29
  5. Step 5: Solve for x
    x = 228,833,835,780.29/553,977.87
  6. Step 6: Final answer
    x = 413,073.97

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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.