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Finding the Fourth Proportional to 455,236.86, 682,323.60 and 342,554.88

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Solution

The fourth proportional to 455,236.86, 682,323.60 and 342,554.88 is: 513,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,236.86 : 682,323.60 = 342,554.88 : x
  2. Step 2: Convert to fraction form
    455,236.86/682,323.60 = 342,554.88/x
  3. Step 3: Cross multiply
    455,236.86x = 682,323.60 × 342,554.88
  4. Step 4: Simplify right side
    455,236.86x = 233,733,278,919.17
  5. Step 5: Solve for x
    x = 233,733,278,919.17/455,236.86
  6. Step 6: Final answer
    x = 513,432.24

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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.