Home / 1,236,235.87-1,854,563.14-426,400.40

Finding the Fourth Proportional to 1,236,235.87, 1,854,563.14 and 426,400.40

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Solution

The fourth proportional to 1,236,235.87, 1,854,563.14 and 426,400.40 is: 639,672.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,235.87 : 1,854,563.14 = 426,400.40 : x
  2. Step 2: Convert to fraction form
    1,236,235.87/1,854,563.14 = 426,400.40/x
  3. Step 3: Cross multiply
    1,236,235.87x = 1,854,563.14 × 426,400.40
  4. Step 4: Simplify right side
    1,236,235.87x = 790,786,469,890.66
  5. Step 5: Solve for x
    x = 790,786,469,890.66/1,236,235.87
  6. Step 6: Final answer
    x = 639,672.81

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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.