Home / 805,999.71-1,112,279.59-443,415.79

Finding the Fourth Proportional to 805,999.71, 1,112,279.59 and 443,415.79

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Solution

The fourth proportional to 805,999.71, 1,112,279.59 and 443,415.79 is: 611,913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,999.71 : 1,112,279.59 = 443,415.79 : x
  2. Step 2: Convert to fraction form
    805,999.71/1,112,279.59 = 443,415.79/x
  3. Step 3: Cross multiply
    805,999.71x = 1,112,279.59 × 443,415.79
  4. Step 4: Simplify right side
    805,999.71x = 493,202,327,539.33
  5. Step 5: Solve for x
    x = 493,202,327,539.33/805,999.71
  6. Step 6: Final answer
    x = 611,913.78

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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.