Home / 858,138.62-1,184,240.57-470,942.55

Finding the Fourth Proportional to 858,138.62, 1,184,240.57 and 470,942.55

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Solution

The fourth proportional to 858,138.62, 1,184,240.57 and 470,942.55 is: 649,905.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,138.62 : 1,184,240.57 = 470,942.55 : x
  2. Step 2: Convert to fraction form
    858,138.62/1,184,240.57 = 470,942.55/x
  3. Step 3: Cross multiply
    858,138.62x = 1,184,240.57 × 470,942.55
  4. Step 4: Simplify right side
    858,138.62x = 557,709,271,494.54
  5. Step 5: Solve for x
    x = 557,709,271,494.54/858,138.62
  6. Step 6: Final answer
    x = 649,905.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.