Home / 778,519.85-1,167,219.32-478,380.32

Finding the Fourth Proportional to 778,519.85, 1,167,219.32 and 478,380.32

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Solution

The fourth proportional to 778,519.85, 1,167,219.32 and 478,380.32 is: 717,226.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,519.85 : 1,167,219.32 = 478,380.32 : x
  2. Step 2: Convert to fraction form
    778,519.85/1,167,219.32 = 478,380.32/x
  3. Step 3: Cross multiply
    778,519.85x = 1,167,219.32 × 478,380.32
  4. Step 4: Simplify right side
    778,519.85x = 558,374,745,975.69
  5. Step 5: Solve for x
    x = 558,374,745,975.69/778,519.85
  6. Step 6: Final answer
    x = 717,226.09

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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.