Home / 1,238,515.20-1,857,335.40-439,822.80

Finding the Fourth Proportional to 1,238,515.20, 1,857,335.40 and 439,822.80

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Solution

The fourth proportional to 1,238,515.20, 1,857,335.40 and 439,822.80 is: 659,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,515.20 : 1,857,335.40 = 439,822.80 : x
  2. Step 2: Convert to fraction form
    1,238,515.20/1,857,335.40 = 439,822.80/x
  3. Step 3: Cross multiply
    1,238,515.20x = 1,857,335.40 × 439,822.80
  4. Step 4: Simplify right side
    1,238,515.20x = 816,898,456,167.12
  5. Step 5: Solve for x
    x = 816,898,456,167.12/1,238,515.20
  6. Step 6: Final answer
    x = 659,578.87

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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.