Home / 1,238,511.20-1,857,329.40-439,818.80

Finding the Fourth Proportional to 1,238,511.20, 1,857,329.40 and 439,818.80

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Solution

The fourth proportional to 1,238,511.20, 1,857,329.40 and 439,818.80 is: 659,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,511.20 : 1,857,329.40 = 439,818.80 : x
  2. Step 2: Convert to fraction form
    1,238,511.20/1,857,329.40 = 439,818.80/x
  3. Step 3: Cross multiply
    1,238,511.20x = 1,857,329.40 × 439,818.80
  4. Step 4: Simplify right side
    1,238,511.20x = 816,888,387,912.72
  5. Step 5: Solve for x
    x = 816,888,387,912.72/1,238,511.20
  6. Step 6: Final answer
    x = 659,572.87

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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.