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Finding the Fourth Proportional to 578,483.82, 868,285.46 and 279,175.10

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Solution

The fourth proportional to 578,483.82, 868,285.46 and 279,175.10 is: 419,032.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,483.82 : 868,285.46 = 279,175.10 : x
  2. Step 2: Convert to fraction form
    578,483.82/868,285.46 = 279,175.10/x
  3. Step 3: Cross multiply
    578,483.82x = 868,285.46 × 279,175.10
  4. Step 4: Simplify right side
    578,483.82x = 242,403,676,480.56
  5. Step 5: Solve for x
    x = 242,403,676,480.56/578,483.82
  6. Step 6: Final answer
    x = 419,032.77

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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.