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Finding the Fourth Proportional to 1,974,908.05, 2,961,520.92 and 775,989.35

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Solution

The fourth proportional to 1,974,908.05, 2,961,520.92 and 775,989.35 is: 1,163,653.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974,908.05 : 2,961,520.92 = 775,989.35 : x
  2. Step 2: Convert to fraction form
    1,974,908.05/2,961,520.92 = 775,989.35/x
  3. Step 3: Cross multiply
    1,974,908.05x = 2,961,520.92 × 775,989.35
  4. Step 4: Simplify right side
    1,974,908.05x = 2,298,108,690,020.30
  5. Step 5: Solve for x
    x = 2,298,108,690,020.30/1,974,908.05
  6. Step 6: Final answer
    x = 1,163,653.51

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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.