Home / 1,093,570.40-1,640,355.60-978,424.85

Finding the Fourth Proportional to 1,093,570.40, 1,640,355.60 and 978,424.85

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Solution

The fourth proportional to 1,093,570.40, 1,640,355.60 and 978,424.85 is: 1,467,637.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093,570.40 : 1,640,355.60 = 978,424.85 : x
  2. Step 2: Convert to fraction form
    1,093,570.40/1,640,355.60 = 978,424.85/x
  3. Step 3: Cross multiply
    1,093,570.40x = 1,640,355.60 × 978,424.85
  4. Step 4: Simplify right side
    1,093,570.40x = 1,604,964,681,876.66
  5. Step 5: Solve for x
    x = 1,604,964,681,876.66/1,093,570.40
  6. Step 6: Final answer
    x = 1,467,637.28

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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.