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Finding the Fourth Proportional to 576,579.49, 864,872.30 and 378,156.40

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Solution

The fourth proportional to 576,579.49, 864,872.30 and 378,156.40 is: 567,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,579.49 : 864,872.30 = 378,156.40 : x
  2. Step 2: Convert to fraction form
    576,579.49/864,872.30 = 378,156.40/x
  3. Step 3: Cross multiply
    576,579.49x = 864,872.30 × 378,156.40
  4. Step 4: Simplify right side
    576,579.49x = 327,056,995,427.72
  5. Step 5: Solve for x
    x = 327,056,995,427.72/576,579.49
  6. Step 6: Final answer
    x = 567,236.61

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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.