Home / 800,021.10-1,200,032.80-326,706.46

Finding the Fourth Proportional to 800,021.10, 1,200,032.80 and 326,706.46

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Solution

The fourth proportional to 800,021.10, 1,200,032.80 and 326,706.46 is: 490,060.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,021.10 : 1,200,032.80 = 326,706.46 : x
  2. Step 2: Convert to fraction form
    800,021.10/1,200,032.80 = 326,706.46/x
  3. Step 3: Cross multiply
    800,021.10x = 1,200,032.80 × 326,706.46
  4. Step 4: Simplify right side
    800,021.10x = 392,058,467,971.89
  5. Step 5: Solve for x
    x = 392,058,467,971.89/800,021.10
  6. Step 6: Final answer
    x = 490,060.16

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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.