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Finding the Fourth Proportional to 636,872.54, 878,884.05 and 350,386.47

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Solution

The fourth proportional to 636,872.54, 878,884.05 and 350,386.47 is: 483,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,872.54 : 878,884.05 = 350,386.47 : x
  2. Step 2: Convert to fraction form
    636,872.54/878,884.05 = 350,386.47/x
  3. Step 3: Cross multiply
    636,872.54x = 878,884.05 × 350,386.47
  4. Step 4: Simplify right side
    636,872.54x = 307,949,081,132.75
  5. Step 5: Solve for x
    x = 307,949,081,132.75/636,872.54
  6. Step 6: Final answer
    x = 483,533.30

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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.