Home / 812,469,423.78-1,121,191,790.76-477,978,096.42

Finding the Fourth Proportional to 812,469,423.78, 1,121,191,790.76 and 477,978,096.42

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Solution

The fourth proportional to 812,469,423.78, 1,121,191,790.76 and 477,978,096.42 is: 659,600,351.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,469,423.78 : 1,121,191,790.76 = 477,978,096.42 : x
  2. Step 2: Convert to fraction form
    812,469,423.78/1,121,191,790.76 = 477,978,096.42/x
  3. Step 3: Cross multiply
    812,469,423.78x = 1,121,191,790.76 × 477,978,096.42
  4. Step 4: Simplify right side
    812,469,423.78x = 535,905,117,869,195,776
  5. Step 5: Solve for x
    x = 535,905,117,869,195,776/812,469,423.78
  6. Step 6: Final answer
    x = 659,600,351.94

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Double scale
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1.5x scale

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.