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Finding the Third Proportional to 440,331 and 680,389.50

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Solution

The third proportional to 440,331 and 680,389.50 is: 1,051,322.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,331 : 680,389.50 = 680,389.50 : x
  2. Step 2: Convert to fraction form
    440,331/680,389.50 = 680,389.50/x
  3. Step 3: Cross multiply
    440,331x = 680,389.50 × 680,389.50
  4. Step 4: Simplify right side
    440,331x = 462,929,871,710.25
  5. Step 5: Solve for x
    x = 462,929,871,710.25/440,331
  6. Step 6: Final answer
    x = 1,051,322.46

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.