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Finding the Fourth Proportional to 636,316.56, 878,094.27 and 349,834.41

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Solution

The fourth proportional to 636,316.56, 878,094.27 and 349,834.41 is: 482,759.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,316.56 : 878,094.27 = 349,834.41 : x
  2. Step 2: Convert to fraction form
    636,316.56/878,094.27 = 349,834.41/x
  3. Step 3: Cross multiply
    636,316.56x = 878,094.27 × 349,834.41
  4. Step 4: Simplify right side
    636,316.56x = 307,187,590,869.83
  5. Step 5: Solve for x
    x = 307,187,590,869.83/636,316.56
  6. Step 6: Final answer
    x = 482,759.07

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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.