Home / 1,210,633.82-1,670,274.78-781,199.36

Finding the Fourth Proportional to 1,210,633.82, 1,670,274.78 and 781,199.36

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Solution

The fourth proportional to 1,210,633.82, 1,670,274.78 and 781,199.36 is: 1,077,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,633.82 : 1,670,274.78 = 781,199.36 : x
  2. Step 2: Convert to fraction form
    1,210,633.82/1,670,274.78 = 781,199.36/x
  3. Step 3: Cross multiply
    1,210,633.82x = 1,670,274.78 × 781,199.36
  4. Step 4: Simplify right side
    1,210,633.82x = 1,304,817,589,160.14
  5. Step 5: Solve for x
    x = 1,304,817,589,160.14/1,210,633.82
  6. Step 6: Final answer
    x = 1,077,797.07

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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.