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Finding the Fourth Proportional to 876,245.96, 1,313,803.71 and 343,820.78

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Solution

The fourth proportional to 876,245.96, 1,313,803.71 and 343,820.78 is: 515,509.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,245.96 : 1,313,803.71 = 343,820.78 : x
  2. Step 2: Convert to fraction form
    876,245.96/1,313,803.71 = 343,820.78/x
  3. Step 3: Cross multiply
    876,245.96x = 1,313,803.71 × 343,820.78
  4. Step 4: Simplify right side
    876,245.96x = 451,713,016,339.09
  5. Step 5: Solve for x
    x = 451,713,016,339.09/876,245.96
  6. Step 6: Final answer
    x = 515,509.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.