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Finding the Fourth Proportional to 449,047, 619,685.67 and 247,843

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Solution

The fourth proportional to 449,047, 619,685.67 and 247,843 is: 342,023.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,047 : 619,685.67 = 247,843 : x
  2. Step 2: Convert to fraction form
    449,047/619,685.67 = 247,843/x
  3. Step 3: Cross multiply
    449,047x = 619,685.67 × 247,843
  4. Step 4: Simplify right side
    449,047x = 153,584,755,509.81
  5. Step 5: Solve for x
    x = 153,584,755,509.81/449,047
  6. Step 6: Final answer
    x = 342,023.79

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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.