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Finding the Third Proportional to 389,726 and 837,472

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Solution

The third proportional to 389,726 and 837,472 is: 1,799,621.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,726 : 837,472 = 837,472 : x
  2. Step 2: Convert to fraction form
    389,726/837,472 = 837,472/x
  3. Step 3: Cross multiply
    389,726x = 837,472 × 837,472
  4. Step 4: Simplify right side
    389,726x = 701,359,350,784
  5. Step 5: Solve for x
    x = 701,359,350,784/389,726
  6. Step 6: Final answer
    x = 1,799,621.66

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.