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Finding the Fourth Proportional to 843,634.80, 1,268,404.65 and 825,920.10

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Solution

The fourth proportional to 843,634.80, 1,268,404.65 and 825,920.10 is: 1,241,770.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,634.80 : 1,268,404.65 = 825,920.10 : x
  2. Step 2: Convert to fraction form
    843,634.80/1,268,404.65 = 825,920.10/x
  3. Step 3: Cross multiply
    843,634.80x = 1,268,404.65 × 825,920.10
  4. Step 4: Simplify right side
    843,634.80x = 1,047,600,895,368.46
  5. Step 5: Solve for x
    x = 1,047,600,895,368.46/843,634.80
  6. Step 6: Final answer
    x = 1,241,770.60

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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.