Home / 1,297,200.12-1,790,000.37-753,229.87

Finding the Fourth Proportional to 1,297,200.12, 1,790,000.37 and 753,229.87

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Solution

The fourth proportional to 1,297,200.12, 1,790,000.37 and 753,229.87 is: 1,039,378.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,200.12 : 1,790,000.37 = 753,229.87 : x
  2. Step 2: Convert to fraction form
    1,297,200.12/1,790,000.37 = 753,229.87/x
  3. Step 3: Cross multiply
    1,297,200.12x = 1,790,000.37 × 753,229.87
  4. Step 4: Simplify right side
    1,297,200.12x = 1,348,281,741,520.05
  5. Step 5: Solve for x
    x = 1,348,281,741,520.05/1,297,200.12
  6. Step 6: Final answer
    x = 1,039,378.37

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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.