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Finding the Fourth Proportional to 1,166,815.80, 1,751,973.30 and 813,396.60

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Solution

The fourth proportional to 1,166,815.80, 1,751,973.30 and 813,396.60 is: 1,221,314.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166,815.80 : 1,751,973.30 = 813,396.60 : x
  2. Step 2: Convert to fraction form
    1,166,815.80/1,751,973.30 = 813,396.60/x
  3. Step 3: Cross multiply
    1,166,815.80x = 1,751,973.30 × 813,396.60
  4. Step 4: Simplify right side
    1,166,815.80x = 1,425,049,125,510.78
  5. Step 5: Solve for x
    x = 1,425,049,125,510.78/1,166,815.80
  6. Step 6: Final answer
    x = 1,221,314.56

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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.