Home / 486,867.52-671,864.79-272,009.20

Finding the Fourth Proportional to 486,867.52, 671,864.79 and 272,009.20

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Solution

The fourth proportional to 486,867.52, 671,864.79 and 272,009.20 is: 375,365.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,867.52 : 671,864.79 = 272,009.20 : x
  2. Step 2: Convert to fraction form
    486,867.52/671,864.79 = 272,009.20/x
  3. Step 3: Cross multiply
    486,867.52x = 671,864.79 × 272,009.20
  4. Step 4: Simplify right side
    486,867.52x = 182,753,404,036.07
  5. Step 5: Solve for x
    x = 182,753,404,036.07/486,867.52
  6. Step 6: Final answer
    x = 375,365.78

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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.