Home / 866,051,998.80-1,299,077,998.20-219,819,742.80

Finding the Fourth Proportional to 866,051,998.80, 1,299,077,998.20 and 219,819,742.80

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Solution

The fourth proportional to 866,051,998.80, 1,299,077,998.20 and 219,819,742.80 is: 329,729,614.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,051,998.80 : 1,299,077,998.20 = 219,819,742.80 : x
  2. Step 2: Convert to fraction form
    866,051,998.80/1,299,077,998.20 = 219,819,742.80/x
  3. Step 3: Cross multiply
    866,051,998.80x = 1,299,077,998.20 × 219,819,742.80
  4. Step 4: Simplify right side
    866,051,998.80x = 285,562,991,441,462,880
  5. Step 5: Solve for x
    x = 285,562,991,441,462,880/866,051,998.80
  6. Step 6: Final answer
    x = 329,729,614.20

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Double scale
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1.5x scale

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.