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Finding the Fourth Proportional to 690,225.30, 952,508.97 and 388,419.30

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Solution

The fourth proportional to 690,225.30, 952,508.97 and 388,419.30 is: 536,017.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,225.30 : 952,508.97 = 388,419.30 : x
  2. Step 2: Convert to fraction form
    690,225.30/952,508.97 = 388,419.30/x
  3. Step 3: Cross multiply
    690,225.30x = 952,508.97 × 388,419.30
  4. Step 4: Simplify right side
    690,225.30x = 369,972,867,371.12
  5. Step 5: Solve for x
    x = 369,972,867,371.12/690,225.30
  6. Step 6: Final answer
    x = 536,017.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.