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Finding the Fourth Proportional to 636,667.38, 878,725.78 and 364,917.40

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Solution

The fourth proportional to 636,667.38, 878,725.78 and 364,917.40 is: 503,657.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,667.38 : 878,725.78 = 364,917.40 : x
  2. Step 2: Convert to fraction form
    636,667.38/878,725.78 = 364,917.40/x
  3. Step 3: Cross multiply
    636,667.38x = 878,725.78 × 364,917.40
  4. Step 4: Simplify right side
    636,667.38x = 320,662,326,950.57
  5. Step 5: Solve for x
    x = 320,662,326,950.57/636,667.38
  6. Step 6: Final answer
    x = 503,657.54

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1.5x scale

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.