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Finding the Fourth Proportional to 620,662.46, 930,968.40 and 215,947.32

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Solution

The fourth proportional to 620,662.46, 930,968.40 and 215,947.32 is: 323,912.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,662.46 : 930,968.40 = 215,947.32 : x
  2. Step 2: Convert to fraction form
    620,662.46/930,968.40 = 215,947.32/x
  3. Step 3: Cross multiply
    620,662.46x = 930,968.40 × 215,947.32
  4. Step 4: Simplify right side
    620,662.46x = 201,040,130,984.69
  5. Step 5: Solve for x
    x = 201,040,130,984.69/620,662.46
  6. Step 6: Final answer
    x = 323,912.18

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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.