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Finding the Third Proportional to 389,106 and 846,387

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Solution

The third proportional to 389,106 and 846,387 is: 1,841,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,106 : 846,387 = 846,387 : x
  2. Step 2: Convert to fraction form
    389,106/846,387 = 846,387/x
  3. Step 3: Cross multiply
    389,106x = 846,387 × 846,387
  4. Step 4: Simplify right side
    389,106x = 716,370,953,769
  5. Step 5: Solve for x
    x = 716,370,953,769/389,106
  6. Step 6: Final answer
    x = 1,841,068.90

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.