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Finding the Third Proportional to 389,232 and 855,090

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Solution

The third proportional to 389,232 and 855,090 is: 1,878,516.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,232 : 855,090 = 855,090 : x
  2. Step 2: Convert to fraction form
    389,232/855,090 = 855,090/x
  3. Step 3: Cross multiply
    389,232x = 855,090 × 855,090
  4. Step 4: Simplify right side
    389,232x = 731,178,908,100
  5. Step 5: Solve for x
    x = 731,178,908,100/389,232
  6. Step 6: Final answer
    x = 1,878,516.95

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.