Home / 645,435,660.62-890,674,902.37-381,203,195.42

Finding the Fourth Proportional to 645,435,660.62, 890,674,902.37 and 381,203,195.42

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Solution

The fourth proportional to 645,435,660.62, 890,674,902.37 and 381,203,195.42 is: 526,044,871.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,435,660.62 : 890,674,902.37 = 381,203,195.42 : x
  2. Step 2: Convert to fraction form
    645,435,660.62/890,674,902.37 = 381,203,195.42/x
  3. Step 3: Cross multiply
    645,435,660.62x = 890,674,902.37 × 381,203,195.42
  4. Step 4: Simplify right side
    645,435,660.62x = 339,528,118,863,840,576
  5. Step 5: Solve for x
    x = 339,528,118,863,840,576/645,435,660.62
  6. Step 6: Final answer
    x = 526,044,871.05

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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.