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Finding the Fourth Proportional to 693,850.40, 957,460.36 and 421,880.56

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Solution

The fourth proportional to 693,850.40, 957,460.36 and 421,880.56 is: 582,162.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,850.40 : 957,460.36 = 421,880.56 : x
  2. Step 2: Convert to fraction form
    693,850.40/957,460.36 = 421,880.56/x
  3. Step 3: Cross multiply
    693,850.40x = 957,460.36 × 421,880.56
  4. Step 4: Simplify right side
    693,850.40x = 403,933,912,854.60
  5. Step 5: Solve for x
    x = 403,933,912,854.60/693,850.40
  6. Step 6: Final answer
    x = 582,162.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.