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Finding the Third Proportional to 316,895 and 660,000

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Solution

The third proportional to 316,895 and 660,000 is: 1,374,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,895 : 660,000 = 660,000 : x
  2. Step 2: Convert to fraction form
    316,895/660,000 = 660,000/x
  3. Step 3: Cross multiply
    316,895x = 660,000 × 660,000
  4. Step 4: Simplify right side
    316,895x = 435,600,000,000
  5. Step 5: Solve for x
    x = 435,600,000,000/316,895
  6. Step 6: Final answer
    x = 1,374,587.80

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.