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Finding the Fourth Proportional to 412,515.55, 618,773.83 and 112,998.72

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Solution

The fourth proportional to 412,515.55, 618,773.83 and 112,998.72 is: 169,498.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,515.55 : 618,773.83 = 112,998.72 : x
  2. Step 2: Convert to fraction form
    412,515.55/618,773.83 = 112,998.72/x
  3. Step 3: Cross multiply
    412,515.55x = 618,773.83 × 112,998.72
  4. Step 4: Simplify right side
    412,515.55x = 69,920,651,692.72
  5. Step 5: Solve for x
    x = 69,920,651,692.72/412,515.55
  6. Step 6: Final answer
    x = 169,498.22

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1.5x scale

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.