Home / 805,217.76-1,111,200.12-442,665

Finding the Fourth Proportional to 805,217.76, 1,111,200.12 and 442,665

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Solution

The fourth proportional to 805,217.76, 1,111,200.12 and 442,665 is: 610,877.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,217.76 : 1,111,200.12 = 442,665 : x
  2. Step 2: Convert to fraction form
    805,217.76/1,111,200.12 = 442,665/x
  3. Step 3: Cross multiply
    805,217.76x = 1,111,200.12 × 442,665
  4. Step 4: Simplify right side
    805,217.76x = 491,889,401,119.80
  5. Step 5: Solve for x
    x = 491,889,401,119.80/805,217.76
  6. Step 6: Final answer
    x = 610,877.49

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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.