Home / 831,346.87-1,147,263.92-449,372.74

Finding the Fourth Proportional to 831,346.87, 1,147,263.92 and 449,372.74

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Solution

The fourth proportional to 831,346.87, 1,147,263.92 and 449,372.74 is: 620,137.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,346.87 : 1,147,263.92 = 449,372.74 : x
  2. Step 2: Convert to fraction form
    831,346.87/1,147,263.92 = 449,372.74/x
  3. Step 3: Cross multiply
    831,346.87x = 1,147,263.92 × 449,372.74
  4. Step 4: Simplify right side
    831,346.87x = 515,549,126,620.65
  5. Step 5: Solve for x
    x = 515,549,126,620.65/831,346.87
  6. Step 6: Final answer
    x = 620,137.21

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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.