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Finding the Fourth Proportional to 618,414.80, 926,213.88 and 368,580.56

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Solution

The fourth proportional to 618,414.80, 926,213.88 and 368,580.56 is: 552,031.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,414.80 : 926,213.88 = 368,580.56 : x
  2. Step 2: Convert to fraction form
    618,414.80/926,213.88 = 368,580.56/x
  3. Step 3: Cross multiply
    618,414.80x = 926,213.88 × 368,580.56
  4. Step 4: Simplify right side
    618,414.80x = 341,384,430,570.17
  5. Step 5: Solve for x
    x = 341,384,430,570.17/618,414.80
  6. Step 6: Final answer
    x = 552,031.47

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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.