Home / 694,643.40-1,042,022.70-221,315.40

Finding the Fourth Proportional to 694,643.40, 1,042,022.70 and 221,315.40

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Solution

The fourth proportional to 694,643.40, 1,042,022.70 and 221,315.40 is: 331,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,643.40 : 1,042,022.70 = 221,315.40 : x
  2. Step 2: Convert to fraction form
    694,643.40/1,042,022.70 = 221,315.40/x
  3. Step 3: Cross multiply
    694,643.40x = 1,042,022.70 × 221,315.40
  4. Step 4: Simplify right side
    694,643.40x = 230,615,670,659.58
  5. Step 5: Solve for x
    x = 230,615,670,659.58/694,643.40
  6. Step 6: Final answer
    x = 331,991.45

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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.