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Finding the Fourth Proportional to 639,006.10, 957,695.10 and 339,630.10

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Solution

The fourth proportional to 639,006.10, 957,695.10 and 339,630.10 is: 509,012.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,006.10 : 957,695.10 = 339,630.10 : x
  2. Step 2: Convert to fraction form
    639,006.10/957,695.10 = 339,630.10/x
  3. Step 3: Cross multiply
    639,006.10x = 957,695.10 × 339,630.10
  4. Step 4: Simplify right side
    639,006.10x = 325,262,082,582.51
  5. Step 5: Solve for x
    x = 325,262,082,582.51/639,006.10
  6. Step 6: Final answer
    x = 509,012.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.