Home / 715,986.26-987,815.16-443,956.22

Finding the Fourth Proportional to 715,986.26, 987,815.16 and 443,956.22

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Solution

The fourth proportional to 715,986.26, 987,815.16 and 443,956.22 is: 612,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,986.26 : 987,815.16 = 443,956.22 : x
  2. Step 2: Convert to fraction form
    715,986.26/987,815.16 = 443,956.22/x
  3. Step 3: Cross multiply
    715,986.26x = 987,815.16 × 443,956.22
  4. Step 4: Simplify right side
    715,986.26x = 438,546,684,492.30
  5. Step 5: Solve for x
    x = 438,546,684,492.30/715,986.26
  6. Step 6: Final answer
    x = 612,507.12

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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.