Home / 810,213,728.91-1,215,320,607.95-196,793,821.23

Finding the Fourth Proportional to 810,213,728.91, 1,215,320,607.95 and 196,793,821.23

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Solution

The fourth proportional to 810,213,728.91, 1,215,320,607.95 and 196,793,821.23 is: 295,190,735.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,213,728.91 : 1,215,320,607.95 = 196,793,821.23 : x
  2. Step 2: Convert to fraction form
    810,213,728.91/1,215,320,607.95 = 196,793,821.23/x
  3. Step 3: Cross multiply
    810,213,728.91x = 1,215,320,607.95 × 196,793,821.23
  4. Step 4: Simplify right side
    810,213,728.91x = 239,167,586,457,063,232
  5. Step 5: Solve for x
    x = 239,167,586,457,063,232/810,213,728.91
  6. Step 6: Final answer
    x = 295,190,735.39

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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.