Home / 921,661.88-1,382,726.09-256,813.88

Finding the Fourth Proportional to 921,661.88, 1,382,726.09 and 256,813.88

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Solution

The fourth proportional to 921,661.88, 1,382,726.09 and 256,813.88 is: 385,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,661.88 : 1,382,726.09 = 256,813.88 : x
  2. Step 2: Convert to fraction form
    921,661.88/1,382,726.09 = 256,813.88/x
  3. Step 3: Cross multiply
    921,661.88x = 1,382,726.09 × 256,813.88
  4. Step 4: Simplify right side
    921,661.88x = 355,103,245,878.53
  5. Step 5: Solve for x
    x = 355,103,245,878.53/921,661.88
  6. Step 6: Final answer
    x = 385,285.81

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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.