Home / 1,238,509.20-1,857,326.40-439,816.80

Finding the Fourth Proportional to 1,238,509.20, 1,857,326.40 and 439,816.80

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Solution

The fourth proportional to 1,238,509.20, 1,857,326.40 and 439,816.80 is: 659,569.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,509.20 : 1,857,326.40 = 439,816.80 : x
  2. Step 2: Convert to fraction form
    1,238,509.20/1,857,326.40 = 439,816.80/x
  3. Step 3: Cross multiply
    1,238,509.20x = 1,857,326.40 × 439,816.80
  4. Step 4: Simplify right side
    1,238,509.20x = 816,883,353,803.52
  5. Step 5: Solve for x
    x = 816,883,353,803.52/1,238,509.20
  6. Step 6: Final answer
    x = 659,569.87

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1.5x scale

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.