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Finding the Third Proportional to 317,241 and 686,752.50

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Solution

The third proportional to 317,241 and 686,752.50 is: 1,486,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,241 : 686,752.50 = 686,752.50 : x
  2. Step 2: Convert to fraction form
    317,241/686,752.50 = 686,752.50/x
  3. Step 3: Cross multiply
    317,241x = 686,752.50 × 686,752.50
  4. Step 4: Simplify right side
    317,241x = 471,628,996,256.25
  5. Step 5: Solve for x
    x = 471,628,996,256.25/317,241
  6. Step 6: Final answer
    x = 1,486,658.40

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.