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Finding the Fourth Proportional to 917,617.20, 1,373,704.20 and 682,004.40

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Solution

The fourth proportional to 917,617.20, 1,373,704.20 and 682,004.40 is: 1,020,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,617.20 : 1,373,704.20 = 682,004.40 : x
  2. Step 2: Convert to fraction form
    917,617.20/1,373,704.20 = 682,004.40/x
  3. Step 3: Cross multiply
    917,617.20x = 1,373,704.20 × 682,004.40
  4. Step 4: Simplify right side
    917,617.20x = 936,872,308,698.48
  5. Step 5: Solve for x
    x = 936,872,308,698.48/917,617.20
  6. Step 6: Final answer
    x = 1,020,983.81

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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.