Home / 491,725,767.33-678,620,254.77-280,041,558.84

Finding the Fourth Proportional to 491,725,767.33, 678,620,254.77 and 280,041,558.84

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Solution

The fourth proportional to 491,725,767.33, 678,620,254.77 and 280,041,558.84 is: 386,479,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,725,767.33 : 678,620,254.77 = 280,041,558.84 : x
  2. Step 2: Convert to fraction form
    491,725,767.33/678,620,254.77 = 280,041,558.84/x
  3. Step 3: Cross multiply
    491,725,767.33x = 678,620,254.77 × 280,041,558.84
  4. Step 4: Simplify right side
    491,725,767.33x = 190,041,874,006,188,736
  5. Step 5: Solve for x
    x = 190,041,874,006,188,736/491,725,767.33
  6. Step 6: Final answer
    x = 386,479,388.78

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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.