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Finding the Fourth Proportional to 816,560.60, 1,224,879.30 and 255,613.40

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Solution

The fourth proportional to 816,560.60, 1,224,879.30 and 255,613.40 is: 383,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,560.60 : 1,224,879.30 = 255,613.40 : x
  2. Step 2: Convert to fraction form
    816,560.60/1,224,879.30 = 255,613.40/x
  3. Step 3: Cross multiply
    816,560.60x = 1,224,879.30 × 255,613.40
  4. Step 4: Simplify right side
    816,560.60x = 313,095,562,462.62
  5. Step 5: Solve for x
    x = 313,095,562,462.62/816,560.60
  6. Step 6: Final answer
    x = 383,432.12

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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.