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Finding the Fourth Proportional to 616,879.20, 925,318.80 and 368,047.20

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Solution

The fourth proportional to 616,879.20, 925,318.80 and 368,047.20 is: 552,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,879.20 : 925,318.80 = 368,047.20 : x
  2. Step 2: Convert to fraction form
    616,879.20/925,318.80 = 368,047.20/x
  3. Step 3: Cross multiply
    616,879.20x = 925,318.80 × 368,047.20
  4. Step 4: Simplify right side
    616,879.20x = 340,560,993,447.36
  5. Step 5: Solve for x
    x = 340,560,993,447.36/616,879.20
  6. Step 6: Final answer
    x = 552,070.80

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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.