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Finding the Fourth Proportional to 648,112.70, 970,856.85 and 367,301.90

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Solution

The fourth proportional to 648,112.70, 970,856.85 and 367,301.90 is: 550,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,112.70 : 970,856.85 = 367,301.90 : x
  2. Step 2: Convert to fraction form
    648,112.70/970,856.85 = 367,301.90/x
  3. Step 3: Cross multiply
    648,112.70x = 970,856.85 × 367,301.90
  4. Step 4: Simplify right side
    648,112.70x = 356,597,565,633.02
  5. Step 5: Solve for x
    x = 356,597,565,633.02/648,112.70
  6. Step 6: Final answer
    x = 550,209.19

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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.