Home / 728,333.10-1,092,509.73-279,076.68

Finding the Fourth Proportional to 728,333.10, 1,092,509.73 and 279,076.68

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Solution

The fourth proportional to 728,333.10, 1,092,509.73 and 279,076.68 is: 418,618.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,333.10 : 1,092,509.73 = 279,076.68 : x
  2. Step 2: Convert to fraction form
    728,333.10/1,092,509.73 = 279,076.68/x
  3. Step 3: Cross multiply
    728,333.10x = 1,092,509.73 × 279,076.68
  4. Step 4: Simplify right side
    728,333.10x = 304,893,988,316.10
  5. Step 5: Solve for x
    x = 304,893,988,316.10/728,333.10
  6. Step 6: Final answer
    x = 418,618.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.