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Finding the Fourth Proportional to 3,579,372.50, 4,939,534.86 and 1,969,740.50

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Solution

The fourth proportional to 3,579,372.50, 4,939,534.86 and 1,969,740.50 is: 2,718,242.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579,372.50 : 4,939,534.86 = 1,969,740.50 : x
  2. Step 2: Convert to fraction form
    3,579,372.50/4,939,534.86 = 1,969,740.50/x
  3. Step 3: Cross multiply
    3,579,372.50x = 4,939,534.86 × 1,969,740.50
  4. Step 4: Simplify right side
    3,579,372.50x = 9,729,601,864,903.83
  5. Step 5: Solve for x
    x = 9,729,601,864,903.83/3,579,372.50
  6. Step 6: Final answer
    x = 2,718,242.34

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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.