Home / 402,410,660.80-603,615,991.20-218,744,651.20

Finding the Fourth Proportional to 402,410,660.80, 603,615,991.20 and 218,744,651.20

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Solution

The fourth proportional to 402,410,660.80, 603,615,991.20 and 218,744,651.20 is: 328,116,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,410,660.80 : 603,615,991.20 = 218,744,651.20 : x
  2. Step 2: Convert to fraction form
    402,410,660.80/603,615,991.20 = 218,744,651.20/x
  3. Step 3: Cross multiply
    402,410,660.80x = 603,615,991.20 × 218,744,651.20
  4. Step 4: Simplify right side
    402,410,660.80x = 132,037,769,453,786,272
  5. Step 5: Solve for x
    x = 132,037,769,453,786,272/402,410,660.80
  6. Step 6: Final answer
    x = 328,116,976.80

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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.