Home / 1,420,778.42-2,129,679.11-661,994.22

Finding the Fourth Proportional to 1,420,778.42, 2,129,679.11 and 661,994.22

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Solution

The fourth proportional to 1,420,778.42, 2,129,679.11 and 661,994.22 is: 992,297.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,778.42 : 2,129,679.11 = 661,994.22 : x
  2. Step 2: Convert to fraction form
    1,420,778.42/2,129,679.11 = 661,994.22/x
  3. Step 3: Cross multiply
    1,420,778.42x = 2,129,679.11 × 661,994.22
  4. Step 4: Simplify right side
    1,420,778.42x = 1,409,835,257,964.77
  5. Step 5: Solve for x
    x = 1,409,835,257,964.77/1,420,778.42
  6. Step 6: Final answer
    x = 992,297.77

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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.