Home / 491,594,538.21-678,400,734.92-265,533,520.83

Finding the Fourth Proportional to 491,594,538.21, 678,400,734.92 and 265,533,520.83

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Solution

The fourth proportional to 491,594,538.21, 678,400,734.92 and 265,533,520.83 is: 366,436,405.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,594,538.21 : 678,400,734.92 = 265,533,520.83 : x
  2. Step 2: Convert to fraction form
    491,594,538.21/678,400,734.92 = 265,533,520.83/x
  3. Step 3: Cross multiply
    491,594,538.21x = 678,400,734.92 × 265,533,520.83
  4. Step 4: Simplify right side
    491,594,538.21x = 180,138,135,676,967,136
  5. Step 5: Solve for x
    x = 180,138,135,676,967,136/491,594,538.21
  6. Step 6: Final answer
    x = 366,436,405.77

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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.