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Finding the Third Proportional to 839,520 and 1,331,487

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Solution

The third proportional to 839,520 and 1,331,487 is: 2,111,751.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,520 : 1,331,487 = 1,331,487 : x
  2. Step 2: Convert to fraction form
    839,520/1,331,487 = 1,331,487/x
  3. Step 3: Cross multiply
    839,520x = 1,331,487 × 1,331,487
  4. Step 4: Simplify right side
    839,520x = 1,772,857,631,169
  5. Step 5: Solve for x
    x = 1,772,857,631,169/839,520
  6. Step 6: Final answer
    x = 2,111,751.51

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.