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Finding the Fourth Proportional to 639,184.50, 882,039.87 and 352,648.62

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Solution

The fourth proportional to 639,184.50, 882,039.87 and 352,648.62 is: 486,635.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,184.50 : 882,039.87 = 352,648.62 : x
  2. Step 2: Convert to fraction form
    639,184.50/882,039.87 = 352,648.62/x
  3. Step 3: Cross multiply
    639,184.50x = 882,039.87 × 352,648.62
  4. Step 4: Simplify right side
    639,184.50x = 311,050,142,940.48
  5. Step 5: Solve for x
    x = 311,050,142,940.48/639,184.50
  6. Step 6: Final answer
    x = 486,635.93

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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.