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Finding the Fourth Proportional to 1,331,713.13, 1,837,763.21 and 719,865.86

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Solution

The fourth proportional to 1,331,713.13, 1,837,763.21 and 719,865.86 is: 993,414.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,713.13 : 1,837,763.21 = 719,865.86 : x
  2. Step 2: Convert to fraction form
    1,331,713.13/1,837,763.21 = 719,865.86/x
  3. Step 3: Cross multiply
    1,331,713.13x = 1,837,763.21 × 719,865.86
  4. Step 4: Simplify right side
    1,331,713.13x = 1,322,942,980,854.87
  5. Step 5: Solve for x
    x = 1,322,942,980,854.87/1,331,713.13
  6. Step 6: Final answer
    x = 993,414.39

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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.