Home / 543,057.12-815,181.60-431,454.72

Finding the Fourth Proportional to 543,057.12, 815,181.60 and 431,454.72

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Solution

The fourth proportional to 543,057.12, 815,181.60 and 431,454.72 is: 647,655.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,057.12 : 815,181.60 = 431,454.72 : x
  2. Step 2: Convert to fraction form
    543,057.12/815,181.60 = 431,454.72/x
  3. Step 3: Cross multiply
    543,057.12x = 815,181.60 × 431,454.72
  4. Step 4: Simplify right side
    543,057.12x = 351,713,948,977.15
  5. Step 5: Solve for x
    x = 351,713,948,977.15/543,057.12
  6. Step 6: Final answer
    x = 647,655.53

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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.