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Finding the Fourth Proportional to 808,546.80, 1,212,820.20 and 792,800.40

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Solution

The fourth proportional to 808,546.80, 1,212,820.20 and 792,800.40 is: 1,189,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,546.80 : 1,212,820.20 = 792,800.40 : x
  2. Step 2: Convert to fraction form
    808,546.80/1,212,820.20 = 792,800.40/x
  3. Step 3: Cross multiply
    808,546.80x = 1,212,820.20 × 792,800.40
  4. Step 4: Simplify right side
    808,546.80x = 961,524,339,688.08
  5. Step 5: Solve for x
    x = 961,524,339,688.08/808,546.80
  6. Step 6: Final answer
    x = 1,189,200.60

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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.