Home / 821,623.46-1,233,450.08-389,753.82

Finding the Fourth Proportional to 821,623.46, 1,233,450.08 and 389,753.82

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Solution

The fourth proportional to 821,623.46, 1,233,450.08 and 389,753.82 is: 585,112.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,623.46 : 1,233,450.08 = 389,753.82 : x
  2. Step 2: Convert to fraction form
    821,623.46/1,233,450.08 = 389,753.82/x
  3. Step 3: Cross multiply
    821,623.46x = 1,233,450.08 × 389,753.82
  4. Step 4: Simplify right side
    821,623.46x = 480,741,878,510.54
  5. Step 5: Solve for x
    x = 480,741,878,510.54/821,623.46
  6. Step 6: Final answer
    x = 585,112.16

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1.5x scale

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.