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Finding the Fourth Proportional to 648,099.20, 970,836.60 and 367,288.40

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Solution

The fourth proportional to 648,099.20, 970,836.60 and 367,288.40 is: 550,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,099.20 : 970,836.60 = 367,288.40 : x
  2. Step 2: Convert to fraction form
    648,099.20/970,836.60 = 367,288.40/x
  3. Step 3: Cross multiply
    648,099.20x = 970,836.60 × 367,288.40
  4. Step 4: Simplify right side
    648,099.20x = 356,577,021,475.44
  5. Step 5: Solve for x
    x = 356,577,021,475.44/648,099.20
  6. Step 6: Final answer
    x = 550,188.95

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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.