Home / 639,926.72-882,779.04-381,621.44

Finding the Fourth Proportional to 639,926.72, 882,779.04 and 381,621.44

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Solution

The fourth proportional to 639,926.72, 882,779.04 and 381,621.44 is: 526,446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,926.72 : 882,779.04 = 381,621.44 : x
  2. Step 2: Convert to fraction form
    639,926.72/882,779.04 = 381,621.44/x
  3. Step 3: Cross multiply
    639,926.72x = 882,779.04 × 381,621.44
  4. Step 4: Simplify right side
    639,926.72x = 336,887,408,446.62
  5. Step 5: Solve for x
    x = 336,887,408,446.62/639,926.72
  6. Step 6: Final answer
    x = 526,446.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.