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Finding the Fourth Proportional to 615,912.40, 923,868.60 and 580,920.40

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Solution

The fourth proportional to 615,912.40, 923,868.60 and 580,920.40 is: 871,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,912.40 : 923,868.60 = 580,920.40 : x
  2. Step 2: Convert to fraction form
    615,912.40/923,868.60 = 580,920.40/x
  3. Step 3: Cross multiply
    615,912.40x = 923,868.60 × 580,920.40
  4. Step 4: Simplify right side
    615,912.40x = 536,694,116,659.44
  5. Step 5: Solve for x
    x = 536,694,116,659.44/615,912.40
  6. Step 6: Final answer
    x = 871,380.60

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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.