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Finding the Third Proportional to 332,090 and 687,810

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Solution

The third proportional to 332,090 and 687,810 is: 1,424,561.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,090 : 687,810 = 687,810 : x
  2. Step 2: Convert to fraction form
    332,090/687,810 = 687,810/x
  3. Step 3: Cross multiply
    332,090x = 687,810 × 687,810
  4. Step 4: Simplify right side
    332,090x = 473,082,596,100
  5. Step 5: Solve for x
    x = 473,082,596,100/332,090
  6. Step 6: Final answer
    x = 1,424,561.40

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.