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Finding the Third Proportional to 990,664 and 1,530,640

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Solution

The third proportional to 990,664 and 1,530,640 is: 2,364,937.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,664 : 1,530,640 = 1,530,640 : x
  2. Step 2: Convert to fraction form
    990,664/1,530,640 = 1,530,640/x
  3. Step 3: Cross multiply
    990,664x = 1,530,640 × 1,530,640
  4. Step 4: Simplify right side
    990,664x = 2,342,858,809,600
  5. Step 5: Solve for x
    x = 2,342,858,809,600/990,664
  6. Step 6: Final answer
    x = 2,364,937.87

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.