Home / 981,553.23-1,470,828.06-660,516.21

Finding the Fourth Proportional to 981,553.23, 1,470,828.06 and 660,516.21

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Solution

The fourth proportional to 981,553.23, 1,470,828.06 and 660,516.21 is: 989,763.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,553.23 : 1,470,828.06 = 660,516.21 : x
  2. Step 2: Convert to fraction form
    981,553.23/1,470,828.06 = 660,516.21/x
  3. Step 3: Cross multiply
    981,553.23x = 1,470,828.06 × 660,516.21
  4. Step 4: Simplify right side
    981,553.23x = 971,505,775,752.85
  5. Step 5: Solve for x
    x = 971,505,775,752.85/981,553.23
  6. Step 6: Final answer
    x = 989,763.72

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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.