Home / 808,131.80-1,211,420.10-628,117.40

Finding the Fourth Proportional to 808,131.80, 1,211,420.10 and 628,117.40

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Solution

The fourth proportional to 808,131.80, 1,211,420.10 and 628,117.40 is: 941,571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,131.80 : 1,211,420.10 = 628,117.40 : x
  2. Step 2: Convert to fraction form
    808,131.80/1,211,420.10 = 628,117.40/x
  3. Step 3: Cross multiply
    808,131.80x = 1,211,420.10 × 628,117.40
  4. Step 4: Simplify right side
    808,131.80x = 760,914,043,519.74
  5. Step 5: Solve for x
    x = 760,914,043,519.74/808,131.80
  6. Step 6: Final answer
    x = 941,571.71

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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.