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Finding the Fourth Proportional to 776,620.80, 1,164,969.60 and 403,372.80

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Solution

The fourth proportional to 776,620.80, 1,164,969.60 and 403,372.80 is: 605,079.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,620.80 : 1,164,969.60 = 403,372.80 : x
  2. Step 2: Convert to fraction form
    776,620.80/1,164,969.60 = 403,372.80/x
  3. Step 3: Cross multiply
    776,620.80x = 1,164,969.60 × 403,372.80
  4. Step 4: Simplify right side
    776,620.80x = 469,917,049,466.88
  5. Step 5: Solve for x
    x = 469,917,049,466.88/776,620.80
  6. Step 6: Final answer
    x = 605,079.14

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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.