Home / 1,331,009.12-1,996,678.56-521,288.48

Finding the Fourth Proportional to 1,331,009.12, 1,996,678.56 and 521,288.48

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Solution

The fourth proportional to 1,331,009.12, 1,996,678.56 and 521,288.48 is: 781,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,009.12 : 1,996,678.56 = 521,288.48 : x
  2. Step 2: Convert to fraction form
    1,331,009.12/1,996,678.56 = 521,288.48/x
  3. Step 3: Cross multiply
    1,331,009.12x = 1,996,678.56 × 521,288.48
  4. Step 4: Simplify right side
    1,331,009.12x = 1,040,845,531,590.99
  5. Step 5: Solve for x
    x = 1,040,845,531,590.99/1,331,009.12
  6. Step 6: Final answer
    x = 781,997.30

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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.