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Finding the Fourth Proportional to 825,869.80, 1,236,836.40 and 825,869.80

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Solution

The fourth proportional to 825,869.80, 1,236,836.40 and 825,869.80 is: 1,236,836.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,869.80 : 1,236,836.40 = 825,869.80 : x
  2. Step 2: Convert to fraction form
    825,869.80/1,236,836.40 = 825,869.80/x
  3. Step 3: Cross multiply
    825,869.80x = 1,236,836.40 × 825,869.80
  4. Step 4: Simplify right side
    825,869.80x = 1,021,465,830,300.72
  5. Step 5: Solve for x
    x = 1,021,465,830,300.72/825,869.80
  6. Step 6: Final answer
    x = 1,236,836.40

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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.