Home / 378,835,257.56-518,995,618.03-364,671,639.95

Finding the Fourth Proportional to 378,835,257.56, 518,995,618.03 and 364,671,639.95

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Solution

The fourth proportional to 378,835,257.56, 518,995,618.03 and 364,671,639.95 is: 499,591,786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,835,257.56 : 518,995,618.03 = 364,671,639.95 : x
  2. Step 2: Convert to fraction form
    378,835,257.56/518,995,618.03 = 364,671,639.95/x
  3. Step 3: Cross multiply
    378,835,257.56x = 518,995,618.03 × 364,671,639.95
  4. Step 4: Simplify right side
    378,835,257.56x = 189,262,983,153,863,872
  5. Step 5: Solve for x
    x = 189,262,983,153,863,872/378,835,257.56
  6. Step 6: Final answer
    x = 499,591,786.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.