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Finding the Fourth Proportional to 980,751.79, 1,471,125.51 and 261,093.67

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Solution

The fourth proportional to 980,751.79, 1,471,125.51 and 261,093.67 is: 391,639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,751.79 : 1,471,125.51 = 261,093.67 : x
  2. Step 2: Convert to fraction form
    980,751.79/1,471,125.51 = 261,093.67/x
  3. Step 3: Cross multiply
    980,751.79x = 1,471,125.51 × 261,093.67
  4. Step 4: Simplify right side
    980,751.79x = 384,101,558,436.52
  5. Step 5: Solve for x
    x = 384,101,558,436.52/980,751.79
  6. Step 6: Final answer
    x = 391,639.93

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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.