Home / 885,993.60-1,222,246.08-643,900.80

Finding the Fourth Proportional to 885,993.60, 1,222,246.08 and 643,900.80

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Solution

The fourth proportional to 885,993.60, 1,222,246.08 and 643,900.80 is: 888,274.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,993.60 : 1,222,246.08 = 643,900.80 : x
  2. Step 2: Convert to fraction form
    885,993.60/1,222,246.08 = 643,900.80/x
  3. Step 3: Cross multiply
    885,993.60x = 1,222,246.08 × 643,900.80
  4. Step 4: Simplify right side
    885,993.60x = 787,005,228,708.86
  5. Step 5: Solve for x
    x = 787,005,228,708.86/885,993.60
  6. Step 6: Final answer
    x = 888,274.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.