Home / 1,086,431.70-1,628,999.55-666,009.30

Finding the Fourth Proportional to 1,086,431.70, 1,628,999.55 and 666,009.30

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Solution

The fourth proportional to 1,086,431.70, 1,628,999.55 and 666,009.30 is: 998,616.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,431.70 : 1,628,999.55 = 666,009.30 : x
  2. Step 2: Convert to fraction form
    1,086,431.70/1,628,999.55 = 666,009.30/x
  3. Step 3: Cross multiply
    1,086,431.70x = 1,628,999.55 × 666,009.30
  4. Step 4: Simplify right side
    1,086,431.70x = 1,084,928,849,995.82
  5. Step 5: Solve for x
    x = 1,084,928,849,995.82/1,086,431.70
  6. Step 6: Final answer
    x = 998,616.71

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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.