Home / 805,770.09-1,111,963.31-443,221.54

Finding the Fourth Proportional to 805,770.09, 1,111,963.31 and 443,221.54

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Solution

The fourth proportional to 805,770.09, 1,111,963.31 and 443,221.54 is: 611,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,770.09 : 1,111,963.31 = 443,221.54 : x
  2. Step 2: Convert to fraction form
    805,770.09/1,111,963.31 = 443,221.54/x
  3. Step 3: Cross multiply
    805,770.09x = 1,111,963.31 × 443,221.54
  4. Step 4: Simplify right side
    805,770.09x = 492,846,087,347.76
  5. Step 5: Solve for x
    x = 492,846,087,347.76/805,770.09
  6. Step 6: Final answer
    x = 611,646.04

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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.