Home / 639,497.10-882,482.67-353,016.30

Finding the Fourth Proportional to 639,497.10, 882,482.67 and 353,016.30

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Solution

The fourth proportional to 639,497.10, 882,482.67 and 353,016.30 is: 487,149.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,497.10 : 882,482.67 = 353,016.30 : x
  2. Step 2: Convert to fraction form
    639,497.10/882,482.67 = 353,016.30/x
  3. Step 3: Cross multiply
    639,497.10x = 882,482.67 × 353,016.30
  4. Step 4: Simplify right side
    639,497.10x = 311,530,766,977.52
  5. Step 5: Solve for x
    x = 311,530,766,977.52/639,497.10
  6. Step 6: Final answer
    x = 487,149.62

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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.