Home / 639,873,865.81-882,981,333.61-361,361,580.94

Finding the Fourth Proportional to 639,873,865.81, 882,981,333.61 and 361,361,580.94

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Solution

The fourth proportional to 639,873,865.81, 882,981,333.61 and 361,361,580.94 is: 498,653,793.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,873,865.81 : 882,981,333.61 = 361,361,580.94 : x
  2. Step 2: Convert to fraction form
    639,873,865.81/882,981,333.61 = 361,361,580.94/x
  3. Step 3: Cross multiply
    639,873,865.81x = 882,981,333.61 × 361,361,580.94
  4. Step 4: Simplify right side
    639,873,865.81x = 319,075,530,653,819,136
  5. Step 5: Solve for x
    x = 319,075,530,653,819,136/639,873,865.81
  6. Step 6: Final answer
    x = 498,653,793.67

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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.