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Finding the Fourth Proportional to 636,678, 878,740.43 and 364,928.04

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Solution

The fourth proportional to 636,678, 878,740.43 and 364,928.04 is: 503,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,678 : 878,740.43 = 364,928.04 : x
  2. Step 2: Convert to fraction form
    636,678/878,740.43 = 364,928.04/x
  3. Step 3: Cross multiply
    636,678x = 878,740.43 × 364,928.04
  4. Step 4: Simplify right side
    636,678x = 320,677,020,964.02
  5. Step 5: Solve for x
    x = 320,677,020,964.02/636,678
  6. Step 6: Final answer
    x = 503,672.22

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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.