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Finding the Fourth Proportional to 974,808.40, 1,462,212.60 and 820,843.60

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Solution

The fourth proportional to 974,808.40, 1,462,212.60 and 820,843.60 is: 1,231,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    974,808.40 : 1,462,212.60 = 820,843.60 : x
  2. Step 2: Convert to fraction form
    974,808.40/1,462,212.60 = 820,843.60/x
  3. Step 3: Cross multiply
    974,808.40x = 1,462,212.60 × 820,843.60
  4. Step 4: Simplify right side
    974,808.40x = 1,200,247,854,549.36
  5. Step 5: Solve for x
    x = 1,200,247,854,549.36/974,808.40
  6. Step 6: Final answer
    x = 1,231,265.40

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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.