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Finding the Fourth Proportional to 664,508.78, 917,022.12 and 362,702.78

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Solution

The fourth proportional to 664,508.78, 917,022.12 and 362,702.78 is: 500,529.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,508.78 : 917,022.12 = 362,702.78 : x
  2. Step 2: Convert to fraction form
    664,508.78/917,022.12 = 362,702.78/x
  3. Step 3: Cross multiply
    664,508.78x = 917,022.12 × 362,702.78
  4. Step 4: Simplify right side
    664,508.78x = 332,606,472,245.49
  5. Step 5: Solve for x
    x = 332,606,472,245.49/664,508.78
  6. Step 6: Final answer
    x = 500,529.84

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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.