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Finding the Fourth Proportional to 620,657.46, 930,960.90 and 215,942.31

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Solution

The fourth proportional to 620,657.46, 930,960.90 and 215,942.31 is: 323,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,657.46 : 930,960.90 = 215,942.31 : x
  2. Step 2: Convert to fraction form
    620,657.46/930,960.90 = 215,942.31/x
  3. Step 3: Cross multiply
    620,657.46x = 930,960.90 × 215,942.31
  4. Step 4: Simplify right side
    620,657.46x = 201,033,847,265.68
  5. Step 5: Solve for x
    x = 201,033,847,265.68/620,657.46
  6. Step 6: Final answer
    x = 323,904.67

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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.