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Finding the Fourth Proportional to 628,357.89, 867,107.97 and 341,879.11

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Solution

The fourth proportional to 628,357.89, 867,107.97 and 341,879.11 is: 471,779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,357.89 : 867,107.97 = 341,879.11 : x
  2. Step 2: Convert to fraction form
    628,357.89/867,107.97 = 341,879.11/x
  3. Step 3: Cross multiply
    628,357.89x = 867,107.97 × 341,879.11
  4. Step 4: Simplify right side
    628,357.89x = 296,446,101,057.51
  5. Step 5: Solve for x
    x = 296,446,101,057.51/628,357.89
  6. Step 6: Final answer
    x = 471,779.07

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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.