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Finding the Fourth Proportional to 7,978,370.13, 11,967,555.46 and 1,994,738.13

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Solution

The fourth proportional to 7,978,370.13, 11,967,555.46 and 1,994,738.13 is: 2,992,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,370.13 : 11,967,555.46 = 1,994,738.13 : x
  2. Step 2: Convert to fraction form
    7,978,370.13/11,967,555.46 = 1,994,738.13/x
  3. Step 3: Cross multiply
    7,978,370.13x = 11,967,555.46 × 1,994,738.13
  4. Step 4: Simplify right side
    7,978,370.13x = 23,872,139,139,113.91
  5. Step 5: Solve for x
    x = 23,872,139,139,113.91/7,978,370.13
  6. Step 6: Final answer
    x = 2,992,107.26

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Double scale
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Similar ratio
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1.5x scale

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.