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Finding the Fourth Proportional to 1,294,652.88, 1,787,386.44 and 1,151,015.40

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Solution

The fourth proportional to 1,294,652.88, 1,787,386.44 and 1,151,015.40 is: 1,589,081.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,652.88 : 1,787,386.44 = 1,151,015.40 : x
  2. Step 2: Convert to fraction form
    1,294,652.88/1,787,386.44 = 1,151,015.40/x
  3. Step 3: Cross multiply
    1,294,652.88x = 1,787,386.44 × 1,151,015.40
  4. Step 4: Simplify right side
    1,294,652.88x = 2,057,309,318,191.18
  5. Step 5: Solve for x
    x = 2,057,309,318,191.18/1,294,652.88
  6. Step 6: Final answer
    x = 1,589,081.79

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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.