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Finding the Fourth Proportional to 636,625.89, 878,568.80 and 350,172.63

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Solution

The fourth proportional to 636,625.89, 878,568.80 and 350,172.63 is: 483,252.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,625.89 : 878,568.80 = 350,172.63 : x
  2. Step 2: Convert to fraction form
    636,625.89/878,568.80 = 350,172.63/x
  3. Step 3: Cross multiply
    636,625.89x = 878,568.80 × 350,172.63
  4. Step 4: Simplify right side
    636,625.89x = 307,650,745,581.08
  5. Step 5: Solve for x
    x = 307,650,745,581.08/636,625.89
  6. Step 6: Final answer
    x = 483,252.02

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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.