Home / 805,419.82-1,111,449.45-442,822.09

Finding the Fourth Proportional to 805,419.82, 1,111,449.45 and 442,822.09

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Solution

The fourth proportional to 805,419.82, 1,111,449.45 and 442,822.09 is: 611,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,419.82 : 1,111,449.45 = 442,822.09 : x
  2. Step 2: Convert to fraction form
    805,419.82/1,111,449.45 = 442,822.09/x
  3. Step 3: Cross multiply
    805,419.82x = 1,111,449.45 × 442,822.09
  4. Step 4: Simplify right side
    805,419.82x = 492,174,368,378.35
  5. Step 5: Solve for x
    x = 492,174,368,378.35/805,419.82
  6. Step 6: Final answer
    x = 611,078.04

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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.