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Finding the Fourth Proportional to 404,428.70, 606,643.05 and 374,015.90

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Solution

The fourth proportional to 404,428.70, 606,643.05 and 374,015.90 is: 561,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,428.70 : 606,643.05 = 374,015.90 : x
  2. Step 2: Convert to fraction form
    404,428.70/606,643.05 = 374,015.90/x
  3. Step 3: Cross multiply
    404,428.70x = 606,643.05 × 374,015.90
  4. Step 4: Simplify right side
    404,428.70x = 226,894,146,324.50
  5. Step 5: Solve for x
    x = 226,894,146,324.50/404,428.70
  6. Step 6: Final answer
    x = 561,023.85

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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.