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Finding the Fourth Proportional to 455,649.40, 628,669.92 and 262,046.56

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Solution

The fourth proportional to 455,649.40, 628,669.92 and 262,046.56 is: 361,551.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,649.40 : 628,669.92 = 262,046.56 : x
  2. Step 2: Convert to fraction form
    455,649.40/628,669.92 = 262,046.56/x
  3. Step 3: Cross multiply
    455,649.40x = 628,669.92 × 262,046.56
  4. Step 4: Simplify right side
    455,649.40x = 164,740,789,911.48
  5. Step 5: Solve for x
    x = 164,740,789,911.48/455,649.40
  6. Step 6: Final answer
    x = 361,551.64

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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.