Home / 639,511.80-882,532.32-353,025.72

Finding the Fourth Proportional to 639,511.80, 882,532.32 and 353,025.72

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Solution

The fourth proportional to 639,511.80, 882,532.32 and 353,025.72 is: 487,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,511.80 : 882,532.32 = 353,025.72 : x
  2. Step 2: Convert to fraction form
    639,511.80/882,532.32 = 353,025.72/x
  3. Step 3: Cross multiply
    639,511.80x = 882,532.32 × 353,025.72
  4. Step 4: Simplify right side
    639,511.80x = 311,556,607,691.27
  5. Step 5: Solve for x
    x = 311,556,607,691.27/639,511.80
  6. Step 6: Final answer
    x = 487,178.83

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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.