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Finding the Fourth Proportional to 660,329.18, 990,334.28 and 275,870.27

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Solution

The fourth proportional to 660,329.18, 990,334.28 and 275,870.27 is: 413,738.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,329.18 : 990,334.28 = 275,870.27 : x
  2. Step 2: Convert to fraction form
    660,329.18/990,334.28 = 275,870.27/x
  3. Step 3: Cross multiply
    660,329.18x = 990,334.28 × 275,870.27
  4. Step 4: Simplify right side
    660,329.18x = 273,203,788,379.37
  5. Step 5: Solve for x
    x = 273,203,788,379.37/660,329.18
  6. Step 6: Final answer
    x = 413,738.78

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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.