Home / 1,500,813.21-2,071,112.74-812,480.05

Finding the Fourth Proportional to 1,500,813.21, 2,071,112.74 and 812,480.05

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Solution

The fourth proportional to 1,500,813.21, 2,071,112.74 and 812,480.05 is: 1,121,217.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,813.21 : 2,071,112.74 = 812,480.05 : x
  2. Step 2: Convert to fraction form
    1,500,813.21/2,071,112.74 = 812,480.05/x
  3. Step 3: Cross multiply
    1,500,813.21x = 2,071,112.74 × 812,480.05
  4. Step 4: Simplify right side
    1,500,813.21x = 1,682,737,786,155.33
  5. Step 5: Solve for x
    x = 1,682,737,786,155.33/1,500,813.21
  6. Step 6: Final answer
    x = 1,121,217.33

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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.