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Finding the Fourth Proportional to 3,611,906.83, 4,984,405.08 and 1,980,287.28

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Solution

The fourth proportional to 3,611,906.83, 4,984,405.08 and 1,980,287.28 is: 2,732,782.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611,906.83 : 4,984,405.08 = 1,980,287.28 : x
  2. Step 2: Convert to fraction form
    3,611,906.83/4,984,405.08 = 1,980,287.28/x
  3. Step 3: Cross multiply
    3,611,906.83x = 4,984,405.08 × 1,980,287.28
  4. Step 4: Simplify right side
    3,611,906.83x = 9,870,553,978,291.38
  5. Step 5: Solve for x
    x = 9,870,553,978,291.38/3,611,906.83
  6. Step 6: Final answer
    x = 2,732,782.00

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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.