Home / 780,311.85-1,170,467.74-219,346.35

Finding the Fourth Proportional to 780,311.85, 1,170,467.74 and 219,346.35

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Solution

The fourth proportional to 780,311.85, 1,170,467.74 and 219,346.35 is: 329,019.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,311.85 : 1,170,467.74 = 219,346.35 : x
  2. Step 2: Convert to fraction form
    780,311.85/1,170,467.74 = 219,346.35/x
  3. Step 3: Cross multiply
    780,311.85x = 1,170,467.74 × 219,346.35
  4. Step 4: Simplify right side
    780,311.85x = 256,737,826,561.75
  5. Step 5: Solve for x
    x = 256,737,826,561.75/780,311.85
  6. Step 6: Final answer
    x = 329,019.52

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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.