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Finding the Fourth Proportional to 651,458.25, 898,990.65 and 361,057.44

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Solution

The fourth proportional to 651,458.25, 898,990.65 and 361,057.44 is: 498,247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,458.25 : 898,990.65 = 361,057.44 : x
  2. Step 2: Convert to fraction form
    651,458.25/898,990.65 = 361,057.44/x
  3. Step 3: Cross multiply
    651,458.25x = 898,990.65 × 361,057.44
  4. Step 4: Simplify right side
    651,458.25x = 324,587,262,672.94
  5. Step 5: Solve for x
    x = 324,587,262,672.94/651,458.25
  6. Step 6: Final answer
    x = 498,247.22

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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.