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Finding the Fourth Proportional to 636,233.43, 878,018.94 and 345,864.53

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Solution

The fourth proportional to 636,233.43, 878,018.94 and 345,864.53 is: 477,302.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,233.43 : 878,018.94 = 345,864.53 : x
  2. Step 2: Convert to fraction form
    636,233.43/878,018.94 = 345,864.53/x
  3. Step 3: Cross multiply
    636,233.43x = 878,018.94 × 345,864.53
  4. Step 4: Simplify right side
    636,233.43x = 303,675,610,209.25
  5. Step 5: Solve for x
    x = 303,675,610,209.25/636,233.43
  6. Step 6: Final answer
    x = 477,302.19

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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.