Home / 805,999.21-1,112,278.90-443,415.29

Finding the Fourth Proportional to 805,999.21, 1,112,278.90 and 443,415.29

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Solution

The fourth proportional to 805,999.21, 1,112,278.90 and 443,415.29 is: 611,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,999.21 : 1,112,278.90 = 443,415.29 : x
  2. Step 2: Convert to fraction form
    805,999.21/1,112,278.90 = 443,415.29/x
  3. Step 3: Cross multiply
    805,999.21x = 1,112,278.90 × 443,415.29
  4. Step 4: Simplify right side
    805,999.21x = 493,201,465,165.85
  5. Step 5: Solve for x
    x = 493,201,465,165.85/805,999.21
  6. Step 6: Final answer
    x = 611,913.09

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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.