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Finding the Fourth Proportional to 553,511.78, 830,583.39 and 216,579.86

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Solution

The fourth proportional to 553,511.78, 830,583.39 and 216,579.86 is: 324,993.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,511.78 : 830,583.39 = 216,579.86 : x
  2. Step 2: Convert to fraction form
    553,511.78/830,583.39 = 216,579.86/x
  3. Step 3: Cross multiply
    553,511.78x = 830,583.39 × 216,579.86
  4. Step 4: Simplify right side
    553,511.78x = 179,887,634,324.53
  5. Step 5: Solve for x
    x = 179,887,634,324.53/553,511.78
  6. Step 6: Final answer
    x = 324,993.33

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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.