Home / 411,528.09-617,351.30-127,240.80

Finding the Fourth Proportional to 411,528.09, 617,351.30 and 127,240.80

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Solution

The fourth proportional to 411,528.09, 617,351.30 and 127,240.80 is: 190,879.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,528.09 : 617,351.30 = 127,240.80 : x
  2. Step 2: Convert to fraction form
    411,528.09/617,351.30 = 127,240.80/x
  3. Step 3: Cross multiply
    411,528.09x = 617,351.30 × 127,240.80
  4. Step 4: Simplify right side
    411,528.09x = 78,552,272,656.84
  5. Step 5: Solve for x
    x = 78,552,272,656.84/411,528.09
  6. Step 6: Final answer
    x = 190,879.49

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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.