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Finding the Fourth Proportional to 3,631,368.80, 5,447,830.80 and 1,107,279.20

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Solution

The fourth proportional to 3,631,368.80, 5,447,830.80 and 1,107,279.20 is: 1,661,155.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631,368.80 : 5,447,830.80 = 1,107,279.20 : x
  2. Step 2: Convert to fraction form
    3,631,368.80/5,447,830.80 = 1,107,279.20/x
  3. Step 3: Cross multiply
    3,631,368.80x = 5,447,830.80 × 1,107,279.20
  4. Step 4: Simplify right side
    3,631,368.80x = 6,032,269,729,959.36
  5. Step 5: Solve for x
    x = 6,032,269,729,959.36/3,631,368.80
  6. Step 6: Final answer
    x = 1,661,155.91

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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.