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Finding the Fourth Proportional to 636,970.92, 878,919.50 and 364,986.52

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Solution

The fourth proportional to 636,970.92, 878,919.50 and 364,986.52 is: 503,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,970.92 : 878,919.50 = 364,986.52 : x
  2. Step 2: Convert to fraction form
    636,970.92/878,919.50 = 364,986.52/x
  3. Step 3: Cross multiply
    636,970.92x = 878,919.50 × 364,986.52
  4. Step 4: Simplify right side
    636,970.92x = 320,793,769,665.14
  5. Step 5: Solve for x
    x = 320,793,769,665.14/636,970.92
  6. Step 6: Final answer
    x = 503,623.89

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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.