Home / 1,276,864.97-1,761,985.31-718,142.96

Finding the Fourth Proportional to 1,276,864.97, 1,761,985.31 and 718,142.96

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Solution

The fourth proportional to 1,276,864.97, 1,761,985.31 and 718,142.96 is: 990,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,864.97 : 1,761,985.31 = 718,142.96 : x
  2. Step 2: Convert to fraction form
    1,276,864.97/1,761,985.31 = 718,142.96/x
  3. Step 3: Cross multiply
    1,276,864.97x = 1,761,985.31 × 718,142.96
  4. Step 4: Simplify right side
    1,276,864.97x = 1,265,357,346,814.17
  5. Step 5: Solve for x
    x = 1,265,357,346,814.17/1,276,864.97
  6. Step 6: Final answer
    x = 990,987.60

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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.