Home / 916,991.82-1,262,832.93-661,939.02

Finding the Fourth Proportional to 916,991.82, 1,262,832.93 and 661,939.02

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Solution

The fourth proportional to 916,991.82, 1,262,832.93 and 661,939.02 is: 911,587.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,991.82 : 1,262,832.93 = 661,939.02 : x
  2. Step 2: Convert to fraction form
    916,991.82/1,262,832.93 = 661,939.02/x
  3. Step 3: Cross multiply
    916,991.82x = 1,262,832.93 × 661,939.02
  4. Step 4: Simplify right side
    916,991.82x = 835,918,392,107.93
  5. Step 5: Solve for x
    x = 835,918,392,107.93/916,991.82
  6. Step 6: Final answer
    x = 911,587.62

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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.