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Finding the Fourth Proportional to 1,218,701.80, 1,824,942.30 and 969,869.80

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Solution

The fourth proportional to 1,218,701.80, 1,824,942.30 and 969,869.80 is: 1,452,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,701.80 : 1,824,942.30 = 969,869.80 : x
  2. Step 2: Convert to fraction form
    1,218,701.80/1,824,942.30 = 969,869.80/x
  3. Step 3: Cross multiply
    1,218,701.80x = 1,824,942.30 × 969,869.80
  4. Step 4: Simplify right side
    1,218,701.80x = 1,769,956,423,512.54
  5. Step 5: Solve for x
    x = 1,769,956,423,512.54/1,218,701.80
  6. Step 6: Final answer
    x = 1,452,329.38

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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.