Home / 1,325,289.72-1,828,851.81-809,905.86

Finding the Fourth Proportional to 1,325,289.72, 1,828,851.81 and 809,905.86

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Solution

The fourth proportional to 1,325,289.72, 1,828,851.81 and 809,905.86 is: 1,117,640.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,289.72 : 1,828,851.81 = 809,905.86 : x
  2. Step 2: Convert to fraction form
    1,325,289.72/1,828,851.81 = 809,905.86/x
  3. Step 3: Cross multiply
    1,325,289.72x = 1,828,851.81 × 809,905.86
  4. Step 4: Simplify right side
    1,325,289.72x = 1,481,197,797,990.61
  5. Step 5: Solve for x
    x = 1,481,197,797,990.61/1,325,289.72
  6. Step 6: Final answer
    x = 1,117,640.75

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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.