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Finding the Fourth Proportional to 636,668.95, 878,584.64 and 350,188.96

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Solution

The fourth proportional to 636,668.95, 878,584.64 and 350,188.96 is: 483,250.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,668.95 : 878,584.64 = 350,188.96 : x
  2. Step 2: Convert to fraction form
    636,668.95/878,584.64 = 350,188.96/x
  3. Step 3: Cross multiply
    636,668.95x = 878,584.64 × 350,188.96
  4. Step 4: Simplify right side
    636,668.95x = 307,670,641,353.57
  5. Step 5: Solve for x
    x = 307,670,641,353.57/636,668.95
  6. Step 6: Final answer
    x = 483,250.58

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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.