Home / 1,238,520.20-1,857,342.90-439,827.80

Finding the Fourth Proportional to 1,238,520.20, 1,857,342.90 and 439,827.80

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Solution

The fourth proportional to 1,238,520.20, 1,857,342.90 and 439,827.80 is: 659,586.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,520.20 : 1,857,342.90 = 439,827.80 : x
  2. Step 2: Convert to fraction form
    1,238,520.20/1,857,342.90 = 439,827.80/x
  3. Step 3: Cross multiply
    1,238,520.20x = 1,857,342.90 × 439,827.80
  4. Step 4: Simplify right side
    1,238,520.20x = 816,911,041,552.62
  5. Step 5: Solve for x
    x = 816,911,041,552.62/1,238,520.20
  6. Step 6: Final answer
    x = 659,586.37

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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.