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Finding the Fourth Proportional to 1,787,979.52, 2,467,411.76 and 983,163.52

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Solution

The fourth proportional to 1,787,979.52, 2,467,411.76 and 983,163.52 is: 1,356,765.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,979.52 : 2,467,411.76 = 983,163.52 : x
  2. Step 2: Convert to fraction form
    1,787,979.52/2,467,411.76 = 983,163.52/x
  3. Step 3: Cross multiply
    1,787,979.52x = 2,467,411.76 × 983,163.52
  4. Step 4: Simplify right side
    1,787,979.52x = 2,425,869,231,251.00
  5. Step 5: Solve for x
    x = 2,425,869,231,251.00/1,787,979.52
  6. Step 6: Final answer
    x = 1,356,765.67

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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.