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Finding the Fourth Proportional to 620,246.25, 855,876.03 and 348,311.94

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Solution

The fourth proportional to 620,246.25, 855,876.03 and 348,311.94 is: 480,634.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,246.25 : 855,876.03 = 348,311.94 : x
  2. Step 2: Convert to fraction form
    620,246.25/855,876.03 = 348,311.94/x
  3. Step 3: Cross multiply
    620,246.25x = 855,876.03 × 348,311.94
  4. Step 4: Simplify right side
    620,246.25x = 298,111,835,893.09
  5. Step 5: Solve for x
    x = 298,111,835,893.09/620,246.25
  6. Step 6: Final answer
    x = 480,634.64

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Why These Related Problems?

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