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Finding the Fourth Proportional to 522,696.09, 721,540.80 and 353,159.85

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Solution

The fourth proportional to 522,696.09, 721,540.80 and 353,159.85 is: 487,509.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,696.09 : 721,540.80 = 353,159.85 : x
  2. Step 2: Convert to fraction form
    522,696.09/721,540.80 = 353,159.85/x
  3. Step 3: Cross multiply
    522,696.09x = 721,540.80 × 353,159.85
  4. Step 4: Simplify right side
    522,696.09x = 254,819,240,696.88
  5. Step 5: Solve for x
    x = 254,819,240,696.88/522,696.09
  6. Step 6: Final answer
    x = 487,509.37

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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.