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Finding the Fourth Proportional to 6,640,561.14, 9,974,116.80 and 6,422,648.46

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Solution

The fourth proportional to 6,640,561.14, 9,974,116.80 and 6,422,648.46 is: 9,646,812.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640,561.14 : 9,974,116.80 = 6,422,648.46 : x
  2. Step 2: Convert to fraction form
    6,640,561.14/9,974,116.80 = 6,422,648.46/x
  3. Step 3: Cross multiply
    6,640,561.14x = 9,974,116.80 × 6,422,648.46
  4. Step 4: Simplify right side
    6,640,561.14x = 64,060,245,905,380.13
  5. Step 5: Solve for x
    x = 64,060,245,905,380.13/6,640,561.14
  6. Step 6: Final answer
    x = 9,646,812.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.