Home / 631,715,379.12-947,659,299.70-263,164,142.28

Finding the Fourth Proportional to 631,715,379.12, 947,659,299.70 and 263,164,142.28

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Solution

The fourth proportional to 631,715,379.12, 947,659,299.70 and 263,164,142.28 is: 394,782,136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,715,379.12 : 947,659,299.70 = 263,164,142.28 : x
  2. Step 2: Convert to fraction form
    631,715,379.12/947,659,299.70 = 263,164,142.28/x
  3. Step 3: Cross multiply
    631,715,379.12x = 947,659,299.70 × 263,164,142.28
  4. Step 4: Simplify right side
    631,715,379.12x = 249,389,946,778,017,536
  5. Step 5: Solve for x
    x = 249,389,946,778,017,536/631,715,379.12
  6. Step 6: Final answer
    x = 394,782,136.10

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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.