Home / 1,131,328.45-1,561,265.73-689,828.90

Finding the Fourth Proportional to 1,131,328.45, 1,561,265.73 and 689,828.90

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Solution

The fourth proportional to 1,131,328.45, 1,561,265.73 and 689,828.90 is: 951,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,328.45 : 1,561,265.73 = 689,828.90 : x
  2. Step 2: Convert to fraction form
    1,131,328.45/1,561,265.73 = 689,828.90/x
  3. Step 3: Cross multiply
    1,131,328.45x = 1,561,265.73 × 689,828.90
  4. Step 4: Simplify right side
    1,131,328.45x = 1,077,006,217,684.45
  5. Step 5: Solve for x
    x = 1,077,006,217,684.45/1,131,328.45
  6. Step 6: Final answer
    x = 951,983.68

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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.