Home / 1,285,608.12-1,928,390.72-312,982.67

Finding the Fourth Proportional to 1,285,608.12, 1,928,390.72 and 312,982.67

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Solution

The fourth proportional to 1,285,608.12, 1,928,390.72 and 312,982.67 is: 469,468.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,608.12 : 1,928,390.72 = 312,982.67 : x
  2. Step 2: Convert to fraction form
    1,285,608.12/1,928,390.72 = 312,982.67/x
  3. Step 3: Cross multiply
    1,285,608.12x = 1,928,390.72 × 312,982.67
  4. Step 4: Simplify right side
    1,285,608.12x = 603,552,865,141.96
  5. Step 5: Solve for x
    x = 603,552,865,141.96/1,285,608.12
  6. Step 6: Final answer
    x = 469,468.77

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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.