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Finding the Fourth Proportional to 486,636.52, 666,680.91 and 468,442.57

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Solution

The fourth proportional to 486,636.52, 666,680.91 and 468,442.57 is: 641,755.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,636.52 : 666,680.91 = 468,442.57 : x
  2. Step 2: Convert to fraction form
    486,636.52/666,680.91 = 468,442.57/x
  3. Step 3: Cross multiply
    486,636.52x = 666,680.91 × 468,442.57
  4. Step 4: Simplify right side
    486,636.52x = 312,301,715,516.93
  5. Step 5: Solve for x
    x = 312,301,715,516.93/486,636.52
  6. Step 6: Final answer
    x = 641,755.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.