Home / 805,161.20-1,111,110-442,577.30

Finding the Fourth Proportional to 805,161.20, 1,111,110 and 442,577.30

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Solution

The fourth proportional to 805,161.20, 1,111,110 and 442,577.30 is: 610,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,161.20 : 1,111,110 = 442,577.30 : x
  2. Step 2: Convert to fraction form
    805,161.20/1,111,110 = 442,577.30/x
  3. Step 3: Cross multiply
    805,161.20x = 1,111,110 × 442,577.30
  4. Step 4: Simplify right side
    805,161.20x = 491,752,063,803
  5. Step 5: Solve for x
    x = 491,752,063,803/805,161.20
  6. Step 6: Final answer
    x = 610,749.83

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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.