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Finding the Fourth Proportional to 613,821.63, 847,116.44 and 372,114.39

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Solution

The fourth proportional to 613,821.63, 847,116.44 and 372,114.39 is: 513,543.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,821.63 : 847,116.44 = 372,114.39 : x
  2. Step 2: Convert to fraction form
    613,821.63/847,116.44 = 372,114.39/x
  3. Step 3: Cross multiply
    613,821.63x = 847,116.44 × 372,114.39
  4. Step 4: Simplify right side
    613,821.63x = 315,224,215,469.00
  5. Step 5: Solve for x
    x = 315,224,215,469.00/613,821.63
  6. Step 6: Final answer
    x = 513,543.67

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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.