Home / 387,082,620.72-579,667,928.04-288,477,876.60

Finding the Fourth Proportional to 387,082,620.72, 579,667,928.04 and 288,477,876.60

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Solution

The fourth proportional to 387,082,620.72, 579,667,928.04 and 288,477,876.60 is: 432,004,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,082,620.72 : 579,667,928.04 = 288,477,876.60 : x
  2. Step 2: Convert to fraction form
    387,082,620.72/579,667,928.04 = 288,477,876.60/x
  3. Step 3: Cross multiply
    387,082,620.72x = 579,667,928.04 × 288,477,876.60
  4. Step 4: Simplify right side
    387,082,620.72x = 167,221,373,014,100,800
  5. Step 5: Solve for x
    x = 167,221,373,014,100,800/387,082,620.72
  6. Step 6: Final answer
    x = 432,004,342.39

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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.