Home / 636,424,809.20-878,259,891.22-354,162,415.29

Finding the Fourth Proportional to 636,424,809.20, 878,259,891.22 and 354,162,415.29

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Solution

The fourth proportional to 636,424,809.20, 878,259,891.22 and 354,162,415.29 is: 488,740,601.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,424,809.20 : 878,259,891.22 = 354,162,415.29 : x
  2. Step 2: Convert to fraction form
    636,424,809.20/878,259,891.22 = 354,162,415.29/x
  3. Step 3: Cross multiply
    636,424,809.20x = 878,259,891.22 × 354,162,415.29
  4. Step 4: Simplify right side
    636,424,809.20x = 311,046,644,325,922,496
  5. Step 5: Solve for x
    x = 311,046,644,325,922,496/636,424,809.20
  6. Step 6: Final answer
    x = 488,740,601.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.