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Finding the Fourth Proportional to 3,270,698.87, 4,905,661.94 and 874,729.20

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Solution

The fourth proportional to 3,270,698.87, 4,905,661.94 and 874,729.20 is: 1,311,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270,698.87 : 4,905,661.94 = 874,729.20 : x
  2. Step 2: Convert to fraction form
    3,270,698.87/4,905,661.94 = 874,729.20/x
  3. Step 3: Cross multiply
    3,270,698.87x = 4,905,661.94 × 874,729.20
  4. Step 4: Simplify right side
    3,270,698.87x = 4,291,125,739,873.00
  5. Step 5: Solve for x
    x = 4,291,125,739,873.00/3,270,698.87
  6. Step 6: Final answer
    x = 1,311,990.47

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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.