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Finding the Third Proportional to 317,855 and 673,618

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Solution

The third proportional to 317,855 and 673,618 is: 1,427,572.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,855 : 673,618 = 673,618 : x
  2. Step 2: Convert to fraction form
    317,855/673,618 = 673,618/x
  3. Step 3: Cross multiply
    317,855x = 673,618 × 673,618
  4. Step 4: Simplify right side
    317,855x = 453,761,209,924
  5. Step 5: Solve for x
    x = 453,761,209,924/317,855
  6. Step 6: Final answer
    x = 1,427,572.98

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.