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Finding the Fourth Proportional to 620,554.42, 856,359.95 and 348,616.49

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Solution

The fourth proportional to 620,554.42, 856,359.95 and 348,616.49 is: 481,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,554.42 : 856,359.95 = 348,616.49 : x
  2. Step 2: Convert to fraction form
    620,554.42/856,359.95 = 348,616.49/x
  3. Step 3: Cross multiply
    620,554.42x = 856,359.95 × 348,616.49
  4. Step 4: Simplify right side
    620,554.42x = 298,541,202,350.49
  5. Step 5: Solve for x
    x = 298,541,202,350.49/620,554.42
  6. Step 6: Final answer
    x = 481,087.87

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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.