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Finding the Third Proportional to 392,423 and 847,570

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Solution

The third proportional to 392,423 and 847,570 is: 1,830,613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,423 : 847,570 = 847,570 : x
  2. Step 2: Convert to fraction form
    392,423/847,570 = 847,570/x
  3. Step 3: Cross multiply
    392,423x = 847,570 × 847,570
  4. Step 4: Simplify right side
    392,423x = 718,374,904,900
  5. Step 5: Solve for x
    x = 718,374,904,900/392,423
  6. Step 6: Final answer
    x = 1,830,613.66

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.