Home / 445,824,415.80-668,736,623.70-427,967,998.20

Finding the Fourth Proportional to 445,824,415.80, 668,736,623.70 and 427,967,998.20

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Solution

The fourth proportional to 445,824,415.80, 668,736,623.70 and 427,967,998.20 is: 641,951,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,824,415.80 : 668,736,623.70 = 427,967,998.20 : x
  2. Step 2: Convert to fraction form
    445,824,415.80/668,736,623.70 = 427,967,998.20/x
  3. Step 3: Cross multiply
    445,824,415.80x = 668,736,623.70 × 427,967,998.20
  4. Step 4: Simplify right side
    445,824,415.80x = 286,197,874,167,915,680
  5. Step 5: Solve for x
    x = 286,197,874,167,915,680/445,824,415.80
  6. Step 6: Final answer
    x = 641,951,997.30

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Half scale
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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.