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Finding the Third Proportional to 7,980,292 and 12,382,128

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Solution

The third proportional to 7,980,292 and 12,382,128 is: 19,211,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980,292 : 12,382,128 = 12,382,128 : x
  2. Step 2: Convert to fraction form
    7,980,292/12,382,128 = 12,382,128/x
  3. Step 3: Cross multiply
    7,980,292x = 12,382,128 × 12,382,128
  4. Step 4: Simplify right side
    7,980,292x = 153,317,093,808,384
  5. Step 5: Solve for x
    x = 153,317,093,808,384/7,980,292
  6. Step 6: Final answer
    x = 19,211,965.40

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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.