Home / 805,643.15-1,111,765.38-443,067.03

Finding the Fourth Proportional to 805,643.15, 1,111,765.38 and 443,067.03

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Solution

The fourth proportional to 805,643.15, 1,111,765.38 and 443,067.03 is: 611,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,643.15 : 1,111,765.38 = 443,067.03 : x
  2. Step 2: Convert to fraction form
    805,643.15/1,111,765.38 = 443,067.03/x
  3. Step 3: Cross multiply
    805,643.15x = 1,111,765.38 × 443,067.03
  4. Step 4: Simplify right side
    805,643.15x = 492,586,581,113.91
  5. Step 5: Solve for x
    x = 492,586,581,113.91/805,643.15
  6. Step 6: Final answer
    x = 611,420.31

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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.