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Finding the Fourth Proportional to 608,415.10, 911,292.53 and 308,380.57

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Solution

The fourth proportional to 608,415.10, 911,292.53 and 308,380.57 is: 461,896.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,415.10 : 911,292.53 = 308,380.57 : x
  2. Step 2: Convert to fraction form
    608,415.10/911,292.53 = 308,380.57/x
  3. Step 3: Cross multiply
    608,415.10x = 911,292.53 × 308,380.57
  4. Step 4: Simplify right side
    608,415.10x = 281,024,906,018.01
  5. Step 5: Solve for x
    x = 281,024,906,018.01/608,415.10
  6. Step 6: Final answer
    x = 461,896.67

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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.