Home / 543,825.80-815,738.70-455,252.30

Finding the Fourth Proportional to 543,825.80, 815,738.70 and 455,252.30

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Solution

The fourth proportional to 543,825.80, 815,738.70 and 455,252.30 is: 682,878.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,825.80 : 815,738.70 = 455,252.30 : x
  2. Step 2: Convert to fraction form
    543,825.80/815,738.70 = 455,252.30/x
  3. Step 3: Cross multiply
    543,825.80x = 815,738.70 × 455,252.30
  4. Step 4: Simplify right side
    543,825.80x = 371,366,919,374.01
  5. Step 5: Solve for x
    x = 371,366,919,374.01/543,825.80
  6. Step 6: Final answer
    x = 682,878.45

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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.