Home / 1,420,776.91-2,129,676.81-661,992.72

Finding the Fourth Proportional to 1,420,776.91, 2,129,676.81 and 661,992.72

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Solution

The fourth proportional to 1,420,776.91, 2,129,676.81 and 661,992.72 is: 992,295.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,776.91 : 2,129,676.81 = 661,992.72 : x
  2. Step 2: Convert to fraction form
    1,420,776.91/2,129,676.81 = 661,992.72/x
  3. Step 3: Cross multiply
    1,420,776.91x = 2,129,676.81 × 661,992.72
  4. Step 4: Simplify right side
    1,420,776.91x = 1,409,830,544,172.82
  5. Step 5: Solve for x
    x = 1,409,830,544,172.82/1,420,776.91
  6. Step 6: Final answer
    x = 992,295.51

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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.