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Finding the Fourth Proportional to 7,387,864.70, 11,081,797.05 and 7,221,976.70

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Solution

The fourth proportional to 7,387,864.70, 11,081,797.05 and 7,221,976.70 is: 10,832,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387,864.70 : 11,081,797.05 = 7,221,976.70 : x
  2. Step 2: Convert to fraction form
    7,387,864.70/11,081,797.05 = 7,221,976.70/x
  3. Step 3: Cross multiply
    7,387,864.70x = 11,081,797.05 × 7,221,976.70
  4. Step 4: Simplify right side
    7,387,864.70x = 80,032,480,089,228.75
  5. Step 5: Solve for x
    x = 80,032,480,089,228.75/7,387,864.70
  6. Step 6: Final answer
    x = 10,832,965.05

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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.