Home / 1,238,505.20-1,857,320.40-439,812.80

Finding the Fourth Proportional to 1,238,505.20, 1,857,320.40 and 439,812.80

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Solution

The fourth proportional to 1,238,505.20, 1,857,320.40 and 439,812.80 is: 659,563.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,505.20 : 1,857,320.40 = 439,812.80 : x
  2. Step 2: Convert to fraction form
    1,238,505.20/1,857,320.40 = 439,812.80/x
  3. Step 3: Cross multiply
    1,238,505.20x = 1,857,320.40 × 439,812.80
  4. Step 4: Simplify right side
    1,238,505.20x = 816,873,285,621.12
  5. Step 5: Solve for x
    x = 816,873,285,621.12/1,238,505.20
  6. Step 6: Final answer
    x = 659,563.87

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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.