Home / 1,247,562,811.71-1,721,568,473.64-682,938,466.10

Finding the Fourth Proportional to 1,247,562,811.71, 1,721,568,473.64 and 682,938,466.10

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Solution

The fourth proportional to 1,247,562,811.71, 1,721,568,473.64 and 682,938,466.10 is: 942,417,745.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,562,811.71 : 1,721,568,473.64 = 682,938,466.10 : x
  2. Step 2: Convert to fraction form
    1,247,562,811.71/1,721,568,473.64 = 682,938,466.10/x
  3. Step 3: Cross multiply
    1,247,562,811.71x = 1,721,568,473.64 × 682,938,466.10
  4. Step 4: Simplify right side
    1,247,562,811.71x = 1,175,725,332,673,819,904
  5. Step 5: Solve for x
    x = 1,175,725,332,673,819,904/1,247,562,811.71
  6. Step 6: Final answer
    x = 942,417,745.73

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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.