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Finding the Fourth Proportional to 636,758, 878,668.44 and 350,290.16

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Solution

The fourth proportional to 636,758, 878,668.44 and 350,290.16 is: 483,368.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,758 : 878,668.44 = 350,290.16 : x
  2. Step 2: Convert to fraction form
    636,758/878,668.44 = 350,290.16/x
  3. Step 3: Cross multiply
    636,758x = 878,668.44 × 350,290.16
  4. Step 4: Simplify right side
    636,758x = 307,788,908,434.55
  5. Step 5: Solve for x
    x = 307,788,908,434.55/636,758
  6. Step 6: Final answer
    x = 483,368.73

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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.