Home / 520,048.20-780,072.30-295,321.80

Finding the Fourth Proportional to 520,048.20, 780,072.30 and 295,321.80

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Solution

The fourth proportional to 520,048.20, 780,072.30 and 295,321.80 is: 442,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,048.20 : 780,072.30 = 295,321.80 : x
  2. Step 2: Convert to fraction form
    520,048.20/780,072.30 = 295,321.80/x
  3. Step 3: Cross multiply
    520,048.20x = 780,072.30 × 295,321.80
  4. Step 4: Simplify right side
    520,048.20x = 230,372,355,766.14
  5. Step 5: Solve for x
    x = 230,372,355,766.14/520,048.20
  6. Step 6: Final answer
    x = 442,982.70

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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.