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Finding the Fourth Proportional to 518,908.70, 778,363.05 and 494,414.30

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Solution

The fourth proportional to 518,908.70, 778,363.05 and 494,414.30 is: 741,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,908.70 : 778,363.05 = 494,414.30 : x
  2. Step 2: Convert to fraction form
    518,908.70/778,363.05 = 494,414.30/x
  3. Step 3: Cross multiply
    518,908.70x = 778,363.05 × 494,414.30
  4. Step 4: Simplify right side
    518,908.70x = 384,833,822,511.62
  5. Step 5: Solve for x
    x = 384,833,822,511.62/518,908.70
  6. Step 6: Final answer
    x = 741,621.45

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.