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Finding the Fourth Proportional to 659,331.58, 989,174.91 and 339,309.06

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Solution

The fourth proportional to 659,331.58, 989,174.91 and 339,309.06 is: 509,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,331.58 : 989,174.91 = 339,309.06 : x
  2. Step 2: Convert to fraction form
    659,331.58/989,174.91 = 339,309.06/x
  3. Step 3: Cross multiply
    659,331.58x = 989,174.91 × 339,309.06
  4. Step 4: Simplify right side
    659,331.58x = 335,636,012,014.80
  5. Step 5: Solve for x
    x = 335,636,012,014.80/659,331.58
  6. Step 6: Final answer
    x = 509,054.96

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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.