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Finding the Fourth Proportional to 460,990.60, 636,209.01 and 279,748.64

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Solution

The fourth proportional to 460,990.60, 636,209.01 and 279,748.64 is: 386,078.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,990.60 : 636,209.01 = 279,748.64 : x
  2. Step 2: Convert to fraction form
    460,990.60/636,209.01 = 279,748.64/x
  3. Step 3: Cross multiply
    460,990.60x = 636,209.01 × 279,748.64
  4. Step 4: Simplify right side
    460,990.60x = 177,978,606,893.77
  5. Step 5: Solve for x
    x = 177,978,606,893.77/460,990.60
  6. Step 6: Final answer
    x = 386,078.61

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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.