Home / 805,949.96-1,112,187.96-438,415.48

Finding the Fourth Proportional to 805,949.96, 1,112,187.96 and 438,415.48

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Solution

The fourth proportional to 805,949.96, 1,112,187.96 and 438,415.48 is: 605,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,949.96 : 1,112,187.96 = 438,415.48 : x
  2. Step 2: Convert to fraction form
    805,949.96/1,112,187.96 = 438,415.48/x
  3. Step 3: Cross multiply
    805,949.96x = 1,112,187.96 × 438,415.48
  4. Step 4: Simplify right side
    805,949.96x = 487,600,418,333.62
  5. Step 5: Solve for x
    x = 487,600,418,333.62/805,949.96
  6. Step 6: Final answer
    x = 605,000.86

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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.