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Finding the Fourth Proportional to 1,298,447.30, 1,956,533.80 and 1,066,975.22

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Solution

The fourth proportional to 1,298,447.30, 1,956,533.80 and 1,066,975.22 is: 1,607,745.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,447.30 : 1,956,533.80 = 1,066,975.22 : x
  2. Step 2: Convert to fraction form
    1,298,447.30/1,956,533.80 = 1,066,975.22/x
  3. Step 3: Cross multiply
    1,298,447.30x = 1,956,533.80 × 1,066,975.22
  4. Step 4: Simplify right side
    1,298,447.30x = 2,087,573,081,692.44
  5. Step 5: Solve for x
    x = 2,087,573,081,692.44/1,298,447.30
  6. Step 6: Final answer
    x = 1,607,745.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.