Home / 289,788,007.70-434,682,011.55-261,122,561.30

Finding the Fourth Proportional to 289,788,007.70, 434,682,011.55 and 261,122,561.30

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Solution

The fourth proportional to 289,788,007.70, 434,682,011.55 and 261,122,561.30 is: 391,683,841.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,788,007.70 : 434,682,011.55 = 261,122,561.30 : x
  2. Step 2: Convert to fraction form
    289,788,007.70/434,682,011.55 = 261,122,561.30/x
  3. Step 3: Cross multiply
    289,788,007.70x = 434,682,011.55 × 261,122,561.30
  4. Step 4: Simplify right side
    289,788,007.70x = 113,505,280,206,972,192
  5. Step 5: Solve for x
    x = 113,505,280,206,972,192/289,788,007.70
  6. Step 6: Final answer
    x = 391,683,841.95

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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.