Home / 1,986,309.96-2,979,761.36-921,459.64

Finding the Fourth Proportional to 1,986,309.96, 2,979,761.36 and 921,459.64

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Solution

The fourth proportional to 1,986,309.96, 2,979,761.36 and 921,459.64 is: 1,382,326.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,309.96 : 2,979,761.36 = 921,459.64 : x
  2. Step 2: Convert to fraction form
    1,986,309.96/2,979,761.36 = 921,459.64/x
  3. Step 3: Cross multiply
    1,986,309.96x = 2,979,761.36 × 921,459.64
  4. Step 4: Simplify right side
    1,986,309.96x = 2,745,729,830,071.51
  5. Step 5: Solve for x
    x = 2,745,729,830,071.51/1,986,309.96
  6. Step 6: Final answer
    x = 1,382,326.97

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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.