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Finding the Fourth Proportional to 639,751.56, 959,057.10 and 324,045.96

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Solution

The fourth proportional to 639,751.56, 959,057.10 and 324,045.96 is: 485,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,751.56 : 959,057.10 = 324,045.96 : x
  2. Step 2: Convert to fraction form
    639,751.56/959,057.10 = 324,045.96/x
  3. Step 3: Cross multiply
    639,751.56x = 959,057.10 × 324,045.96
  4. Step 4: Simplify right side
    639,751.56x = 310,778,578,664.32
  5. Step 5: Solve for x
    x = 310,778,578,664.32/639,751.56
  6. Step 6: Final answer
    x = 485,780.10

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1.5x scale

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.