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Finding the Fourth Proportional to 417,390.52, 625,813.60 and 274,804.20

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Solution

The fourth proportional to 417,390.52, 625,813.60 and 274,804.20 is: 412,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,390.52 : 625,813.60 = 274,804.20 : x
  2. Step 2: Convert to fraction form
    417,390.52/625,813.60 = 274,804.20/x
  3. Step 3: Cross multiply
    417,390.52x = 625,813.60 × 274,804.20
  4. Step 4: Simplify right side
    417,390.52x = 171,976,205,697.12
  5. Step 5: Solve for x
    x = 171,976,205,697.12/417,390.52
  6. Step 6: Final answer
    x = 412,027.10

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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.