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Finding the Fourth Proportional to 618,526.40, 927,789.60 and 408,401.60

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Solution

The fourth proportional to 618,526.40, 927,789.60 and 408,401.60 is: 612,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,526.40 : 927,789.60 = 408,401.60 : x
  2. Step 2: Convert to fraction form
    618,526.40/927,789.60 = 408,401.60/x
  3. Step 3: Cross multiply
    618,526.40x = 927,789.60 × 408,401.60
  4. Step 4: Simplify right side
    618,526.40x = 378,910,757,103.36
  5. Step 5: Solve for x
    x = 378,910,757,103.36/618,526.40
  6. Step 6: Final answer
    x = 612,602.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.