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Finding the Fourth Proportional to 824,751.68, 1,237,168.42 and 256,519.80

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Solution

The fourth proportional to 824,751.68, 1,237,168.42 and 256,519.80 is: 384,792.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,751.68 : 1,237,168.42 = 256,519.80 : x
  2. Step 2: Convert to fraction form
    824,751.68/1,237,168.42 = 256,519.80/x
  3. Step 3: Cross multiply
    824,751.68x = 1,237,168.42 × 256,519.80
  4. Step 4: Simplify right side
    824,751.68x = 317,358,195,664.72
  5. Step 5: Solve for x
    x = 317,358,195,664.72/824,751.68
  6. Step 6: Final answer
    x = 384,792.42

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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.