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Finding the Fourth Proportional to 449,590.85, 620,428.13 and 245,637.39

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Solution

The fourth proportional to 449,590.85, 620,428.13 and 245,637.39 is: 338,975.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,590.85 : 620,428.13 = 245,637.39 : x
  2. Step 2: Convert to fraction form
    449,590.85/620,428.13 = 245,637.39/x
  3. Step 3: Cross multiply
    449,590.85x = 620,428.13 × 245,637.39
  4. Step 4: Simplify right side
    449,590.85x = 152,400,347,610.44
  5. Step 5: Solve for x
    x = 152,400,347,610.44/449,590.85
  6. Step 6: Final answer
    x = 338,975.64

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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.