Home / 805,370.49-1,111,382.87-442,791.56

Finding the Fourth Proportional to 805,370.49, 1,111,382.87 and 442,791.56

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Solution

The fourth proportional to 805,370.49, 1,111,382.87 and 442,791.56 is: 611,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,370.49 : 1,111,382.87 = 442,791.56 : x
  2. Step 2: Convert to fraction form
    805,370.49/1,111,382.87 = 442,791.56/x
  3. Step 3: Cross multiply
    805,370.49x = 1,111,382.87 × 442,791.56
  4. Step 4: Simplify right side
    805,370.49x = 492,110,954,764.58
  5. Step 5: Solve for x
    x = 492,110,954,764.58/805,370.49
  6. Step 6: Final answer
    x = 611,036.74

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1.5x scale

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.