Home / 787,661.20-1,181,054.40-313,811.20

Finding the Fourth Proportional to 787,661.20, 1,181,054.40 and 313,811.20

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Solution

The fourth proportional to 787,661.20, 1,181,054.40 and 313,811.20 is: 470,542.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,661.20 : 1,181,054.40 = 313,811.20 : x
  2. Step 2: Convert to fraction form
    787,661.20/1,181,054.40 = 313,811.20/x
  3. Step 3: Cross multiply
    787,661.20x = 1,181,054.40 × 313,811.20
  4. Step 4: Simplify right side
    787,661.20x = 370,628,098,529.28
  5. Step 5: Solve for x
    x = 370,628,098,529.28/787,661.20
  6. Step 6: Final answer
    x = 470,542.54

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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.