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Finding the Third Proportional to 578,632 and 889,939

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Solution

The third proportional to 578,632 and 889,939 is: 1,368,730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,632 : 889,939 = 889,939 : x
  2. Step 2: Convert to fraction form
    578,632/889,939 = 889,939/x
  3. Step 3: Cross multiply
    578,632x = 889,939 × 889,939
  4. Step 4: Simplify right side
    578,632x = 791,991,423,721
  5. Step 5: Solve for x
    x = 791,991,423,721/578,632
  6. Step 6: Final answer
    x = 1,368,730.77

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.