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Finding the Fourth Proportional to 909,078, 1,363,813.83 and 348,112.50

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Solution

The fourth proportional to 909,078, 1,363,813.83 and 348,112.50 is: 522,244.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,078 : 1,363,813.83 = 348,112.50 : x
  2. Step 2: Convert to fraction form
    909,078/1,363,813.83 = 348,112.50/x
  3. Step 3: Cross multiply
    909,078x = 1,363,813.83 × 348,112.50
  4. Step 4: Simplify right side
    909,078x = 474,760,641,895.88
  5. Step 5: Solve for x
    x = 474,760,641,895.88/909,078
  6. Step 6: Final answer
    x = 522,244.12

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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.