Home / 447,085.20-670,627.80-342,109.20

Finding the Fourth Proportional to 447,085.20, 670,627.80 and 342,109.20

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Solution

The fourth proportional to 447,085.20, 670,627.80 and 342,109.20 is: 513,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,085.20 : 670,627.80 = 342,109.20 : x
  2. Step 2: Convert to fraction form
    447,085.20/670,627.80 = 342,109.20/x
  3. Step 3: Cross multiply
    447,085.20x = 670,627.80 × 342,109.20
  4. Step 4: Simplify right side
    447,085.20x = 229,427,940,155.76
  5. Step 5: Solve for x
    x = 229,427,940,155.76/447,085.20
  6. Step 6: Final answer
    x = 513,163.80

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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.