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Finding the Third Proportional to 387,161.65 and 830,355.68

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Solution

The third proportional to 387,161.65 and 830,355.68 is: 1,780,885.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,161.65 : 830,355.68 = 830,355.68 : x
  2. Step 2: Convert to fraction form
    387,161.65/830,355.68 = 830,355.68/x
  3. Step 3: Cross multiply
    387,161.65x = 830,355.68 × 830,355.68
  4. Step 4: Simplify right side
    387,161.65x = 689,490,554,789.29
  5. Step 5: Solve for x
    x = 689,490,554,789.29/387,161.65
  6. Step 6: Final answer
    x = 1,780,885.47

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.