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Finding the Fourth Proportional to 1,369,734.60, 1,890,672.66 and 961,935.24

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Solution

The fourth proportional to 1,369,734.60, 1,890,672.66 and 961,935.24 is: 1,327,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,734.60 : 1,890,672.66 = 961,935.24 : x
  2. Step 2: Convert to fraction form
    1,369,734.60/1,890,672.66 = 961,935.24/x
  3. Step 3: Cross multiply
    1,369,734.60x = 1,890,672.66 × 961,935.24
  4. Step 4: Simplify right side
    1,369,734.60x = 1,818,704,658,958.54
  5. Step 5: Solve for x
    x = 1,818,704,658,958.54/1,369,734.60
  6. Step 6: Final answer
    x = 1,327,778.87

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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.