Home / 426,962,100.92-640,494,976.19-120,254,213.79

Finding the Fourth Proportional to 426,962,100.92, 640,494,976.19 and 120,254,213.79

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Solution

The fourth proportional to 426,962,100.92, 640,494,976.19 and 120,254,213.79 is: 180,395,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,962,100.92 : 640,494,976.19 = 120,254,213.79 : x
  2. Step 2: Convert to fraction form
    426,962,100.92/640,494,976.19 = 120,254,213.79/x
  3. Step 3: Cross multiply
    426,962,100.92x = 640,494,976.19 × 120,254,213.79
  4. Step 4: Simplify right side
    426,962,100.92x = 77,022,219,797,571,952
  5. Step 5: Solve for x
    x = 77,022,219,797,571,952/426,962,100.92
  6. Step 6: Final answer
    x = 180,395,917.18

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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.