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Finding the Fourth Proportional to 636,708.55, 878,782.57 and 364,958.41

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Solution

The fourth proportional to 636,708.55, 878,782.57 and 364,958.41 is: 503,714.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,708.55 : 878,782.57 = 364,958.41 : x
  2. Step 2: Convert to fraction form
    636,708.55/878,782.57 = 364,958.41/x
  3. Step 3: Cross multiply
    636,708.55x = 878,782.57 × 364,958.41
  4. Step 4: Simplify right side
    636,708.55x = 320,719,088,021.28
  5. Step 5: Solve for x
    x = 320,719,088,021.28/636,708.55
  6. Step 6: Final answer
    x = 503,714.12

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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.