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Finding the Fourth Proportional to 890,379,015.20, 1,335,568,522.80 and 657,926,721.80

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Solution

The fourth proportional to 890,379,015.20, 1,335,568,522.80 and 657,926,721.80 is: 986,890,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,379,015.20 : 1,335,568,522.80 = 657,926,721.80 : x
  2. Step 2: Convert to fraction form
    890,379,015.20/1,335,568,522.80 = 657,926,721.80/x
  3. Step 3: Cross multiply
    890,379,015.20x = 1,335,568,522.80 × 657,926,721.80
  4. Step 4: Simplify right side
    890,379,015.20x = 878,706,219,945,072,512
  5. Step 5: Solve for x
    x = 878,706,219,945,072,512/890,379,015.20
  6. Step 6: Final answer
    x = 986,890,082.70

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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.