Home / 787,713.20-1,181,132.40-313,863.20

Finding the Fourth Proportional to 787,713.20, 1,181,132.40 and 313,863.20

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Solution

The fourth proportional to 787,713.20, 1,181,132.40 and 313,863.20 is: 470,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,713.20 : 1,181,132.40 = 313,863.20 : x
  2. Step 2: Convert to fraction form
    787,713.20/1,181,132.40 = 313,863.20/x
  3. Step 3: Cross multiply
    787,713.20x = 1,181,132.40 × 313,863.20
  4. Step 4: Simplify right side
    787,713.20x = 370,713,994,687.68
  5. Step 5: Solve for x
    x = 370,713,994,687.68/787,713.20
  6. Step 6: Final answer
    x = 470,620.52

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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.