Home / 1,261,355,721.26-1,728,028,425.87-1,214,196,915.38

Finding the Fourth Proportional to 1,261,355,721.26, 1,728,028,425.87 and 1,214,196,915.38

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Solution

The fourth proportional to 1,261,355,721.26, 1,728,028,425.87 and 1,214,196,915.38 is: 1,663,421,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,355,721.26 : 1,728,028,425.87 = 1,214,196,915.38 : x
  2. Step 2: Convert to fraction form
    1,261,355,721.26/1,728,028,425.87 = 1,214,196,915.38/x
  3. Step 3: Cross multiply
    1,261,355,721.26x = 1,728,028,425.87 × 1,214,196,915.38
  4. Step 4: Simplify right side
    1,261,355,721.26x = 2,098,166,784,371,670,784
  5. Step 5: Solve for x
    x = 2,098,166,784,371,670,784/1,261,355,721.26
  6. Step 6: Final answer
    x = 1,663,421,942.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.