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Finding the Fourth Proportional to 774,692.80, 1,161,808.80 and 301,105.60

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Solution

The fourth proportional to 774,692.80, 1,161,808.80 and 301,105.60 is: 451,568.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,692.80 : 1,161,808.80 = 301,105.60 : x
  2. Step 2: Convert to fraction form
    774,692.80/1,161,808.80 = 301,105.60/x
  3. Step 3: Cross multiply
    774,692.80x = 1,161,808.80 × 301,105.60
  4. Step 4: Simplify right side
    774,692.80x = 349,827,135,809.28
  5. Step 5: Solve for x
    x = 349,827,135,809.28/774,692.80
  6. Step 6: Final answer
    x = 451,568.85

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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.