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Finding the Fourth Proportional to 455,569.66, 628,036.56 and 353,414.89

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Solution

The fourth proportional to 455,569.66, 628,036.56 and 353,414.89 is: 487,208.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,569.66 : 628,036.56 = 353,414.89 : x
  2. Step 2: Convert to fraction form
    455,569.66/628,036.56 = 353,414.89/x
  3. Step 3: Cross multiply
    455,569.66x = 628,036.56 × 353,414.89
  4. Step 4: Simplify right side
    455,569.66x = 221,957,470,198.29
  5. Step 5: Solve for x
    x = 221,957,470,198.29/455,569.66
  6. Step 6: Final answer
    x = 487,208.63

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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.