Home / 809,190,731.20-1,213,786,096.80-291,673,485.40

Finding the Fourth Proportional to 809,190,731.20, 1,213,786,096.80 and 291,673,485.40

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Solution

The fourth proportional to 809,190,731.20, 1,213,786,096.80 and 291,673,485.40 is: 437,510,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,190,731.20 : 1,213,786,096.80 = 291,673,485.40 : x
  2. Step 2: Convert to fraction form
    809,190,731.20/1,213,786,096.80 = 291,673,485.40/x
  3. Step 3: Cross multiply
    809,190,731.20x = 1,213,786,096.80 × 291,673,485.40
  4. Step 4: Simplify right side
    809,190,731.20x = 354,029,221,383,717,760
  5. Step 5: Solve for x
    x = 354,029,221,383,717,760/809,190,731.20
  6. Step 6: Final answer
    x = 437,510,228.10

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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.