Home / 291,078,439.80-436,617,659.70-279,599,314.20

Finding the Fourth Proportional to 291,078,439.80, 436,617,659.70 and 279,599,314.20

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Solution

The fourth proportional to 291,078,439.80, 436,617,659.70 and 279,599,314.20 is: 419,398,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,078,439.80 : 436,617,659.70 = 279,599,314.20 : x
  2. Step 2: Convert to fraction form
    291,078,439.80/436,617,659.70 = 279,599,314.20/x
  3. Step 3: Cross multiply
    291,078,439.80x = 436,617,659.70 × 279,599,314.20
  4. Step 4: Simplify right side
    291,078,439.80x = 122,077,998,219,728,976
  5. Step 5: Solve for x
    x = 122,077,998,219,728,976/291,078,439.80
  6. Step 6: Final answer
    x = 419,398,971.30

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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.