Home / 1,420,777.91-2,129,678.31-661,993.72

Finding the Fourth Proportional to 1,420,777.91, 2,129,678.31 and 661,993.72

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Solution

The fourth proportional to 1,420,777.91, 2,129,678.31 and 661,993.72 is: 992,297.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,777.91 : 2,129,678.31 = 661,993.72 : x
  2. Step 2: Convert to fraction form
    1,420,777.91/2,129,678.31 = 661,993.72/x
  3. Step 3: Cross multiply
    1,420,777.91x = 2,129,678.31 × 661,993.72
  4. Step 4: Simplify right side
    1,420,777.91x = 1,409,833,666,840.21
  5. Step 5: Solve for x
    x = 1,409,833,666,840.21/1,420,777.91
  6. Step 6: Final answer
    x = 992,297.01

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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.