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Finding the Fourth Proportional to 624,561.76, 861,845.02 and 352,695.79

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Solution

The fourth proportional to 624,561.76, 861,845.02 and 352,695.79 is: 486,691.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,561.76 : 861,845.02 = 352,695.79 : x
  2. Step 2: Convert to fraction form
    624,561.76/861,845.02 = 352,695.79/x
  3. Step 3: Cross multiply
    624,561.76x = 861,845.02 × 352,695.79
  4. Step 4: Simplify right side
    624,561.76x = 303,969,110,186.47
  5. Step 5: Solve for x
    x = 303,969,110,186.47/624,561.76
  6. Step 6: Final answer
    x = 486,691.84

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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.