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Finding the Fourth Proportional to 620,022.12, 855,571.42 and 348,027.67

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Solution

The fourth proportional to 620,022.12, 855,571.42 and 348,027.67 is: 480,245.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,022.12 : 855,571.42 = 348,027.67 : x
  2. Step 2: Convert to fraction form
    620,022.12/855,571.42 = 348,027.67/x
  3. Step 3: Cross multiply
    620,022.12x = 855,571.42 × 348,027.67
  4. Step 4: Simplify right side
    620,022.12x = 297,762,527,821.19
  5. Step 5: Solve for x
    x = 297,762,527,821.19/620,022.12
  6. Step 6: Final answer
    x = 480,245.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.