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Finding the Third Proportional to 879,455 and 1,393,708

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Solution

The third proportional to 879,455 and 1,393,708 is: 2,208,665.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,455 : 1,393,708 = 1,393,708 : x
  2. Step 2: Convert to fraction form
    879,455/1,393,708 = 1,393,708/x
  3. Step 3: Cross multiply
    879,455x = 1,393,708 × 1,393,708
  4. Step 4: Simplify right side
    879,455x = 1,942,421,989,264
  5. Step 5: Solve for x
    x = 1,942,421,989,264/879,455
  6. Step 6: Final answer
    x = 2,208,665.58

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.