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Finding the Fourth Proportional to 1,245,941.72, 1,867,370.72 and 885,538.32

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Solution

The fourth proportional to 1,245,941.72, 1,867,370.72 and 885,538.32 is: 1,327,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,941.72 : 1,867,370.72 = 885,538.32 : x
  2. Step 2: Convert to fraction form
    1,245,941.72/1,867,370.72 = 885,538.32/x
  3. Step 3: Cross multiply
    1,245,941.72x = 1,867,370.72 × 885,538.32
  4. Step 4: Simplify right side
    1,245,941.72x = 1,653,628,330,205.99
  5. Step 5: Solve for x
    x = 1,653,628,330,205.99/1,245,941.72
  6. Step 6: Final answer
    x = 1,327,211.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.