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Finding the Third Proportional to 460,306 and 621,907

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Solution

The third proportional to 460,306 and 621,907 is: 840,241.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,306 : 621,907 = 621,907 : x
  2. Step 2: Convert to fraction form
    460,306/621,907 = 621,907/x
  3. Step 3: Cross multiply
    460,306x = 621,907 × 621,907
  4. Step 4: Simplify right side
    460,306x = 386,768,316,649
  5. Step 5: Solve for x
    x = 386,768,316,649/460,306
  6. Step 6: Final answer
    x = 840,241.74

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.