Home / 878,284.42-1,211,976.21-491,131.74

Finding the Fourth Proportional to 878,284.42, 1,211,976.21 and 491,131.74

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Solution

The fourth proportional to 878,284.42, 1,211,976.21 and 491,131.74 is: 677,730.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,284.42 : 1,211,976.21 = 491,131.74 : x
  2. Step 2: Convert to fraction form
    878,284.42/1,211,976.21 = 491,131.74/x
  3. Step 3: Cross multiply
    878,284.42x = 1,211,976.21 × 491,131.74
  4. Step 4: Simplify right side
    878,284.42x = 595,239,984,855.91
  5. Step 5: Solve for x
    x = 595,239,984,855.91/878,284.42
  6. Step 6: Final answer
    x = 677,730.32

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1.5x scale

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.