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Finding the Fourth Proportional to 1,318,679,811.70, 1,978,019,717.55 and 336,104,451.70

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Solution

The fourth proportional to 1,318,679,811.70, 1,978,019,717.55 and 336,104,451.70 is: 504,156,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,679,811.70 : 1,978,019,717.55 = 336,104,451.70 : x
  2. Step 2: Convert to fraction form
    1,318,679,811.70/1,978,019,717.55 = 336,104,451.70/x
  3. Step 3: Cross multiply
    1,318,679,811.70x = 1,978,019,717.55 × 336,104,451.70
  4. Step 4: Simplify right side
    1,318,679,811.70x = 664,821,232,618,931,584
  5. Step 5: Solve for x
    x = 664,821,232,618,931,584/1,318,679,811.70
  6. Step 6: Final answer
    x = 504,156,677.55

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Double scale
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Similar ratio
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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.