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Finding the Fourth Proportional to 639,341.61, 882,287.08 and 352,861.69

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Solution

The fourth proportional to 639,341.61, 882,287.08 and 352,861.69 is: 486,946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,341.61 : 882,287.08 = 352,861.69 : x
  2. Step 2: Convert to fraction form
    639,341.61/882,287.08 = 352,861.69/x
  3. Step 3: Cross multiply
    639,341.61x = 882,287.08 × 352,861.69
  4. Step 4: Simplify right side
    639,341.61x = 311,325,310,113.97
  5. Step 5: Solve for x
    x = 311,325,310,113.97/639,341.61
  6. Step 6: Final answer
    x = 486,946.74

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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.