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Finding the Fourth Proportional to 499,287, 689,016.06 and 272,934.12

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Solution

The fourth proportional to 499,287, 689,016.06 and 272,934.12 is: 376,649.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,287 : 689,016.06 = 272,934.12 : x
  2. Step 2: Convert to fraction form
    499,287/689,016.06 = 272,934.12/x
  3. Step 3: Cross multiply
    499,287x = 689,016.06 × 272,934.12
  4. Step 4: Simplify right side
    499,287x = 188,055,992,001.97
  5. Step 5: Solve for x
    x = 188,055,992,001.97/499,287
  6. Step 6: Final answer
    x = 376,649.09

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1.5x scale

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.