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Finding the Fourth Proportional to 635,860.40, 877,563.64 and 381,351.60

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Solution

The fourth proportional to 635,860.40, 877,563.64 and 381,351.60 is: 526,310.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,860.40 : 877,563.64 = 381,351.60 : x
  2. Step 2: Convert to fraction form
    635,860.40/877,563.64 = 381,351.60/x
  3. Step 3: Cross multiply
    635,860.40x = 877,563.64 × 381,351.60
  4. Step 4: Simplify right side
    635,860.40x = 334,660,298,215.82
  5. Step 5: Solve for x
    x = 334,660,298,215.82/635,860.40
  6. Step 6: Final answer
    x = 526,310.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.