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Finding the Fourth Proportional to 819,794.80, 1,229,692.20 and 648,552.70

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Solution

The fourth proportional to 819,794.80, 1,229,692.20 and 648,552.70 is: 972,829.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,794.80 : 1,229,692.20 = 648,552.70 : x
  2. Step 2: Convert to fraction form
    819,794.80/1,229,692.20 = 648,552.70/x
  3. Step 3: Cross multiply
    819,794.80x = 1,229,692.20 × 648,552.70
  4. Step 4: Simplify right side
    819,794.80x = 797,520,196,478.94
  5. Step 5: Solve for x
    x = 797,520,196,478.94/819,794.80
  6. Step 6: Final answer
    x = 972,829.05

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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.