Home / 1,391,119.39-1,919,764.63-810,327.37

Finding the Fourth Proportional to 1,391,119.39, 1,919,764.63 and 810,327.37

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Solution

The fourth proportional to 1,391,119.39, 1,919,764.63 and 810,327.37 is: 1,118,263.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,119.39 : 1,919,764.63 = 810,327.37 : x
  2. Step 2: Convert to fraction form
    1,391,119.39/1,919,764.63 = 810,327.37/x
  3. Step 3: Cross multiply
    1,391,119.39x = 1,919,764.63 × 810,327.37
  4. Step 4: Simplify right side
    1,391,119.39x = 1,555,637,831,063.79
  5. Step 5: Solve for x
    x = 1,555,637,831,063.79/1,391,119.39
  6. Step 6: Final answer
    x = 1,118,263.35

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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.