Home / 828,724.80-1,242,431.10-454,747.80

Finding the Fourth Proportional to 828,724.80, 1,242,431.10 and 454,747.80

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Solution

The fourth proportional to 828,724.80, 1,242,431.10 and 454,747.80 is: 681,761.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,724.80 : 1,242,431.10 = 454,747.80 : x
  2. Step 2: Convert to fraction form
    828,724.80/1,242,431.10 = 454,747.80/x
  3. Step 3: Cross multiply
    828,724.80x = 1,242,431.10 × 454,747.80
  4. Step 4: Simplify right side
    828,724.80x = 564,992,809,376.58
  5. Step 5: Solve for x
    x = 564,992,809,376.58/828,724.80
  6. Step 6: Final answer
    x = 681,761.68

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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.