Home / 805,804.55-1,111,987.09-443,228.40

Finding the Fourth Proportional to 805,804.55, 1,111,987.09 and 443,228.40

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Solution

The fourth proportional to 805,804.55, 1,111,987.09 and 443,228.40 is: 611,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,804.55 : 1,111,987.09 = 443,228.40 : x
  2. Step 2: Convert to fraction form
    805,804.55/1,111,987.09 = 443,228.40/x
  3. Step 3: Cross multiply
    805,804.55x = 1,111,987.09 × 443,228.40
  4. Step 4: Simplify right side
    805,804.55x = 492,864,257,613.29
  5. Step 5: Solve for x
    x = 492,864,257,613.29/805,804.55
  6. Step 6: Final answer
    x = 611,642.43

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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.