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Finding the Fourth Proportional to 1,855,056.82, 2,559,978.65 and 1,028,183.70

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Solution

The fourth proportional to 1,855,056.82, 2,559,978.65 and 1,028,183.70 is: 1,418,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855,056.82 : 2,559,978.65 = 1,028,183.70 : x
  2. Step 2: Convert to fraction form
    1,855,056.82/2,559,978.65 = 1,028,183.70/x
  3. Step 3: Cross multiply
    1,855,056.82x = 2,559,978.65 × 1,028,183.70
  4. Step 4: Simplify right side
    1,855,056.82x = 2,632,128,322,848.46
  5. Step 5: Solve for x
    x = 2,632,128,322,848.46/1,855,056.82
  6. Step 6: Final answer
    x = 1,418,893.64

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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.