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Finding the Fourth Proportional to 640,977.36, 961,059 and 341,273.04

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Solution

The fourth proportional to 640,977.36, 961,059 and 341,273.04 is: 511,692.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,977.36 : 961,059 = 341,273.04 : x
  2. Step 2: Convert to fraction form
    640,977.36/961,059 = 341,273.04/x
  3. Step 3: Cross multiply
    640,977.36x = 961,059 × 341,273.04
  4. Step 4: Simplify right side
    640,977.36x = 327,983,526,549.36
  5. Step 5: Solve for x
    x = 327,983,526,549.36/640,977.36
  6. Step 6: Final answer
    x = 511,692.84

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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.