Home / 1,221,847,450.41-1,686,205,005.72-720,077,411.37

Finding the Fourth Proportional to 1,221,847,450.41, 1,686,205,005.72 and 720,077,411.37

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Solution

The fourth proportional to 1,221,847,450.41, 1,686,205,005.72 and 720,077,411.37 is: 993,739,550.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,847,450.41 : 1,686,205,005.72 = 720,077,411.37 : x
  2. Step 2: Convert to fraction form
    1,221,847,450.41/1,686,205,005.72 = 720,077,411.37/x
  3. Step 3: Cross multiply
    1,221,847,450.41x = 1,686,205,005.72 × 720,077,411.37
  4. Step 4: Simplify right side
    1,221,847,450.41x = 1,214,198,135,557,993,728
  5. Step 5: Solve for x
    x = 1,214,198,135,557,993,728/1,221,847,450.41
  6. Step 6: Final answer
    x = 993,739,550.02

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1.5x scale

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.