Home / 878,313.43-1,212,074.74-491,142.90

Finding the Fourth Proportional to 878,313.43, 1,212,074.74 and 491,142.90

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Solution

The fourth proportional to 878,313.43, 1,212,074.74 and 491,142.90 is: 677,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,313.43 : 1,212,074.74 = 491,142.90 : x
  2. Step 2: Convert to fraction form
    878,313.43/1,212,074.74 = 491,142.90/x
  3. Step 3: Cross multiply
    878,313.43x = 1,212,074.74 × 491,142.90
  4. Step 4: Simplify right side
    878,313.43x = 595,301,902,820.35
  5. Step 5: Solve for x
    x = 595,301,902,820.35/878,313.43
  6. Step 6: Final answer
    x = 677,778.44

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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.