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Finding the Fourth Proportional to 630,020.88, 869,409.48 and 343,546.56

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Solution

The fourth proportional to 630,020.88, 869,409.48 and 343,546.56 is: 474,083.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,020.88 : 869,409.48 = 343,546.56 : x
  2. Step 2: Convert to fraction form
    630,020.88/869,409.48 = 343,546.56/x
  3. Step 3: Cross multiply
    630,020.88x = 869,409.48 × 343,546.56
  4. Step 4: Simplify right side
    630,020.88x = 298,682,636,085.39
  5. Step 5: Solve for x
    x = 298,682,636,085.39/630,020.88
  6. Step 6: Final answer
    x = 474,083.71

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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.