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Finding the Fourth Proportional to 311,783,631.60, 437,213,720.40 and 311,783,631.60

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Solution

The fourth proportional to 311,783,631.60, 437,213,720.40 and 311,783,631.60 is: 437,213,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,783,631.60 : 437,213,720.40 = 311,783,631.60 : x
  2. Step 2: Convert to fraction form
    311,783,631.60/437,213,720.40 = 311,783,631.60/x
  3. Step 3: Cross multiply
    311,783,631.60x = 437,213,720.40 × 311,783,631.60
  4. Step 4: Simplify right side
    311,783,631.60x = 136,316,081,531,659,008
  5. Step 5: Solve for x
    x = 136,316,081,531,659,008/311,783,631.60
  6. Step 6: Final answer
    x = 437,213,720.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.