Home / 447,105.20-670,657.80-342,129.20

Finding the Fourth Proportional to 447,105.20, 670,657.80 and 342,129.20

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Solution

The fourth proportional to 447,105.20, 670,657.80 and 342,129.20 is: 513,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,105.20 : 670,657.80 = 342,129.20 : x
  2. Step 2: Convert to fraction form
    447,105.20/670,657.80 = 342,129.20/x
  3. Step 3: Cross multiply
    447,105.20x = 670,657.80 × 342,129.20
  4. Step 4: Simplify right side
    447,105.20x = 229,451,616,587.76
  5. Step 5: Solve for x
    x = 229,451,616,587.76/447,105.20
  6. Step 6: Final answer
    x = 513,193.80

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Similar ratio
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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.