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Finding the Third Proportional to 455,310.75 and 668,203.88

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Solution

The third proportional to 455,310.75 and 668,203.88 is: 980,641.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,310.75 : 668,203.88 = 668,203.88 : x
  2. Step 2: Convert to fraction form
    455,310.75/668,203.88 = 668,203.88/x
  3. Step 3: Cross multiply
    455,310.75x = 668,203.88 × 668,203.88
  4. Step 4: Simplify right side
    455,310.75x = 446,496,418,565.02
  5. Step 5: Solve for x
    x = 446,496,418,565.02/455,310.75
  6. Step 6: Final answer
    x = 980,641.06

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.