Home / 491,659,421.15-678,469,811.48-268,648,758.48

Finding the Fourth Proportional to 491,659,421.15, 678,469,811.48 and 268,648,758.48

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Solution

The fourth proportional to 491,659,421.15, 678,469,811.48 and 268,648,758.48 is: 370,724,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,659,421.15 : 678,469,811.48 = 268,648,758.48 : x
  2. Step 2: Convert to fraction form
    491,659,421.15/678,469,811.48 = 268,648,758.48/x
  3. Step 3: Cross multiply
    491,659,421.15x = 678,469,811.48 × 268,648,758.48
  4. Step 4: Simplify right side
    491,659,421.15x = 182,270,072,518,918,432
  5. Step 5: Solve for x
    x = 182,270,072,518,918,432/491,659,421.15
  6. Step 6: Final answer
    x = 370,724,254.80

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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.