Home / 920,942.57-1,381,600.70-289,709.57

Finding the Fourth Proportional to 920,942.57, 1,381,600.70 and 289,709.57

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Solution

The fourth proportional to 920,942.57, 1,381,600.70 and 289,709.57 is: 434,623.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,942.57 : 1,381,600.70 = 289,709.57 : x
  2. Step 2: Convert to fraction form
    920,942.57/1,381,600.70 = 289,709.57/x
  3. Step 3: Cross multiply
    920,942.57x = 1,381,600.70 × 289,709.57
  4. Step 4: Simplify right side
    920,942.57x = 400,262,947,800.56
  5. Step 5: Solve for x
    x = 400,262,947,800.56/920,942.57
  6. Step 6: Final answer
    x = 434,623.13

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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.