Home / 817,621.92-1,226,630.34-256,656.42

Finding the Fourth Proportional to 817,621.92, 1,226,630.34 and 256,656.42

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Solution

The fourth proportional to 817,621.92, 1,226,630.34 and 256,656.42 is: 385,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,621.92 : 1,226,630.34 = 256,656.42 : x
  2. Step 2: Convert to fraction form
    817,621.92/1,226,630.34 = 256,656.42/x
  3. Step 3: Cross multiply
    817,621.92x = 1,226,630.34 × 256,656.42
  4. Step 4: Simplify right side
    817,621.92x = 314,822,551,727.78
  5. Step 5: Solve for x
    x = 314,822,551,727.78/817,621.92
  6. Step 6: Final answer
    x = 385,046.61

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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.