Home / 780,315.12-1,170,550.56-211,705.14

Finding the Fourth Proportional to 780,315.12, 1,170,550.56 and 211,705.14

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Solution

The fourth proportional to 780,315.12, 1,170,550.56 and 211,705.14 is: 317,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,315.12 : 1,170,550.56 = 211,705.14 : x
  2. Step 2: Convert to fraction form
    780,315.12/1,170,550.56 = 211,705.14/x
  3. Step 3: Cross multiply
    780,315.12x = 1,170,550.56 × 211,705.14
  4. Step 4: Simplify right side
    780,315.12x = 247,811,570,181.88
  5. Step 5: Solve for x
    x = 247,811,570,181.88/780,315.12
  6. Step 6: Final answer
    x = 317,578.84

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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.