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Finding the Third Proportional to 1,368,718.50 and 2,978,248.50

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Solution

The third proportional to 1,368,718.50 and 2,978,248.50 is: 6,480,488.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,718.50 : 2,978,248.50 = 2,978,248.50 : x
  2. Step 2: Convert to fraction form
    1,368,718.50/2,978,248.50 = 2,978,248.50/x
  3. Step 3: Cross multiply
    1,368,718.50x = 2,978,248.50 × 2,978,248.50
  4. Step 4: Simplify right side
    1,368,718.50x = 8,869,964,127,752.25
  5. Step 5: Solve for x
    x = 8,869,964,127,752.25/1,368,718.50
  6. Step 6: Final answer
    x = 6,480,488.23

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.