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Finding the Fourth Proportional to 438,641.72, 656,465.46 and 367,644.48

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Solution

The fourth proportional to 438,641.72, 656,465.46 and 367,644.48 is: 550,211.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,641.72 : 656,465.46 = 367,644.48 : x
  2. Step 2: Convert to fraction form
    438,641.72/656,465.46 = 367,644.48/x
  3. Step 3: Cross multiply
    438,641.72x = 656,465.46 × 367,644.48
  4. Step 4: Simplify right side
    438,641.72x = 241,345,902,679.66
  5. Step 5: Solve for x
    x = 241,345,902,679.66/438,641.72
  6. Step 6: Final answer
    x = 550,211.92

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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.