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Finding the Fourth Proportional to 1,352,971.82, 1,867,131.29 and 772,183.31

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Solution

The fourth proportional to 1,352,971.82, 1,867,131.29 and 772,183.31 is: 1,065,630.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352,971.82 : 1,867,131.29 = 772,183.31 : x
  2. Step 2: Convert to fraction form
    1,352,971.82/1,867,131.29 = 772,183.31/x
  3. Step 3: Cross multiply
    1,352,971.82x = 1,867,131.29 × 772,183.31
  4. Step 4: Simplify right side
    1,352,971.82x = 1,441,767,612,311.57
  5. Step 5: Solve for x
    x = 1,441,767,612,311.57/1,352,971.82
  6. Step 6: Final answer
    x = 1,065,630.18

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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.