Home / 1,278,404.51-1,764,187.13-697,639.12

Finding the Fourth Proportional to 1,278,404.51, 1,764,187.13 and 697,639.12

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Solution

The fourth proportional to 1,278,404.51, 1,764,187.13 and 697,639.12 is: 962,735.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,404.51 : 1,764,187.13 = 697,639.12 : x
  2. Step 2: Convert to fraction form
    1,278,404.51/1,764,187.13 = 697,639.12/x
  3. Step 3: Cross multiply
    1,278,404.51x = 1,764,187.13 × 697,639.12
  4. Step 4: Simplify right side
    1,278,404.51x = 1,230,765,954,222.16
  5. Step 5: Solve for x
    x = 1,230,765,954,222.16/1,278,404.51
  6. Step 6: Final answer
    x = 962,735.93

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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.