Home / 612,619.92-918,131.22-312,847.83

Finding the Fourth Proportional to 612,619.92, 918,131.22 and 312,847.83

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Solution

The fourth proportional to 612,619.92, 918,131.22 and 312,847.83 is: 468,863.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,619.92 : 918,131.22 = 312,847.83 : x
  2. Step 2: Convert to fraction form
    612,619.92/918,131.22 = 312,847.83/x
  3. Step 3: Cross multiply
    612,619.92x = 918,131.22 × 312,847.83
  4. Step 4: Simplify right side
    612,619.92x = 287,235,359,832.25
  5. Step 5: Solve for x
    x = 287,235,359,832.25/612,619.92
  6. Step 6: Final answer
    x = 468,863.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.