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Finding the Fourth Proportional to 522,694.09, 721,538.04 and 353,157.85

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Solution

The fourth proportional to 522,694.09, 721,538.04 and 353,157.85 is: 487,506.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,694.09 : 721,538.04 = 353,157.85 : x
  2. Step 2: Convert to fraction form
    522,694.09/721,538.04 = 353,157.85/x
  3. Step 3: Cross multiply
    522,694.09x = 721,538.04 × 353,157.85
  4. Step 4: Simplify right side
    522,694.09x = 254,816,822,899.61
  5. Step 5: Solve for x
    x = 254,816,822,899.61/522,694.09
  6. Step 6: Final answer
    x = 487,506.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.