Home / 1,317,284.73-1,972,190.57-862,405.74

Finding the Fourth Proportional to 1,317,284.73, 1,972,190.57 and 862,405.74

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Solution

The fourth proportional to 1,317,284.73, 1,972,190.57 and 862,405.74 is: 1,291,162.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,284.73 : 1,972,190.57 = 862,405.74 : x
  2. Step 2: Convert to fraction form
    1,317,284.73/1,972,190.57 = 862,405.74/x
  3. Step 3: Cross multiply
    1,317,284.73x = 1,972,190.57 × 862,405.74
  4. Step 4: Simplify right side
    1,317,284.73x = 1,700,828,463,629.84
  5. Step 5: Solve for x
    x = 1,700,828,463,629.84/1,317,284.73
  6. Step 6: Final answer
    x = 1,291,162.36

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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.