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Finding the Third Proportional to 296,820 and 660,078

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Solution

The third proportional to 296,820 and 660,078 is: 1,467,902.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,820 : 660,078 = 660,078 : x
  2. Step 2: Convert to fraction form
    296,820/660,078 = 660,078/x
  3. Step 3: Cross multiply
    296,820x = 660,078 × 660,078
  4. Step 4: Simplify right side
    296,820x = 435,702,966,084
  5. Step 5: Solve for x
    x = 435,702,966,084/296,820
  6. Step 6: Final answer
    x = 1,467,902.99

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.