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Finding the Fourth Proportional to 1,249,738.22, 1,724,150.50 and 726,361.88

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Solution

The fourth proportional to 1,249,738.22, 1,724,150.50 and 726,361.88 is: 1,002,095.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,738.22 : 1,724,150.50 = 726,361.88 : x
  2. Step 2: Convert to fraction form
    1,249,738.22/1,724,150.50 = 726,361.88/x
  3. Step 3: Cross multiply
    1,249,738.22x = 1,724,150.50 × 726,361.88
  4. Step 4: Simplify right side
    1,249,738.22x = 1,252,357,188,146.28
  5. Step 5: Solve for x
    x = 1,252,357,188,146.28/1,249,738.22
  6. Step 6: Final answer
    x = 1,002,095.61

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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.