Home / 1,333,382.31-1,999,991.34-821,145.06

Finding the Fourth Proportional to 1,333,382.31, 1,999,991.34 and 821,145.06

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Solution

The fourth proportional to 1,333,382.31, 1,999,991.34 and 821,145.06 is: 1,231,667.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,382.31 : 1,999,991.34 = 821,145.06 : x
  2. Step 2: Convert to fraction form
    1,333,382.31/1,999,991.34 = 821,145.06/x
  3. Step 3: Cross multiply
    1,333,382.31x = 1,999,991.34 × 821,145.06
  4. Step 4: Simplify right side
    1,333,382.31x = 1,642,283,008,883.78
  5. Step 5: Solve for x
    x = 1,642,283,008,883.78/1,333,382.31
  6. Step 6: Final answer
    x = 1,231,667.01

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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.