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Finding the Fourth Proportional to 620,604.88, 856,446.10 and 344,988.60

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Solution

The fourth proportional to 620,604.88, 856,446.10 and 344,988.60 is: 476,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,604.88 : 856,446.10 = 344,988.60 : x
  2. Step 2: Convert to fraction form
    620,604.88/856,446.10 = 344,988.60/x
  3. Step 3: Cross multiply
    620,604.88x = 856,446.10 × 344,988.60
  4. Step 4: Simplify right side
    620,604.88x = 295,464,141,014.46
  5. Step 5: Solve for x
    x = 295,464,141,014.46/620,604.88
  6. Step 6: Final answer
    x = 476,090.59

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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.