Home / 805,205.09-1,111,186.62-442,652.31

Finding the Fourth Proportional to 805,205.09, 1,111,186.62 and 442,652.31

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Solution

The fourth proportional to 805,205.09, 1,111,186.62 and 442,652.31 is: 610,862.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,205.09 : 1,111,186.62 = 442,652.31 : x
  2. Step 2: Convert to fraction form
    805,205.09/1,111,186.62 = 442,652.31/x
  3. Step 3: Cross multiply
    805,205.09x = 1,111,186.62 × 442,652.31
  4. Step 4: Simplify right side
    805,205.09x = 491,869,324,184.09
  5. Step 5: Solve for x
    x = 491,869,324,184.09/805,205.09
  6. Step 6: Final answer
    x = 610,862.16

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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.