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Finding the Fourth Proportional to 635,620.34, 953,380.59 and 280,643.06

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Solution

The fourth proportional to 635,620.34, 953,380.59 and 280,643.06 is: 420,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,620.34 : 953,380.59 = 280,643.06 : x
  2. Step 2: Convert to fraction form
    635,620.34/953,380.59 = 280,643.06/x
  3. Step 3: Cross multiply
    635,620.34x = 953,380.59 × 280,643.06
  4. Step 4: Simplify right side
    635,620.34x = 267,559,646,122.21
  5. Step 5: Solve for x
    x = 267,559,646,122.21/635,620.34
  6. Step 6: Final answer
    x = 420,942.55

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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.