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Finding the Fourth Proportional to 636,376.48, 878,202.83 and 349,915.01

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Solution

The fourth proportional to 636,376.48, 878,202.83 and 349,915.01 is: 482,884.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,376.48 : 878,202.83 = 349,915.01 : x
  2. Step 2: Convert to fraction form
    636,376.48/878,202.83 = 349,915.01/x
  3. Step 3: Cross multiply
    636,376.48x = 878,202.83 × 349,915.01
  4. Step 4: Simplify right side
    636,376.48x = 307,296,355,111.77
  5. Step 5: Solve for x
    x = 307,296,355,111.77/636,376.48
  6. Step 6: Final answer
    x = 482,884.53

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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.