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Finding the Third Proportional to 392,424 and 847,572

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Solution

The third proportional to 392,424 and 847,572 is: 1,830,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,424 : 847,572 = 847,572 : x
  2. Step 2: Convert to fraction form
    392,424/847,572 = 847,572/x
  3. Step 3: Cross multiply
    392,424x = 847,572 × 847,572
  4. Step 4: Simplify right side
    392,424x = 718,378,295,184
  5. Step 5: Solve for x
    x = 718,378,295,184/392,424
  6. Step 6: Final answer
    x = 1,830,617.64

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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.