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Finding the Fourth Proportional to 1,815,991.62, 2,723,041.54 and 677,817.74

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Solution

The fourth proportional to 1,815,991.62, 2,723,041.54 and 677,817.74 is: 1,016,373.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815,991.62 : 2,723,041.54 = 677,817.74 : x
  2. Step 2: Convert to fraction form
    1,815,991.62/2,723,041.54 = 677,817.74/x
  3. Step 3: Cross multiply
    1,815,991.62x = 2,723,041.54 × 677,817.74
  4. Step 4: Simplify right side
    1,815,991.62x = 1,845,725,870,223.80
  5. Step 5: Solve for x
    x = 1,845,725,870,223.80/1,815,991.62
  6. Step 6: Final answer
    x = 1,016,373.56

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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.