Home / 1,311,295,385.40-1,966,943,078.10-1,236,048,588.60

Finding the Fourth Proportional to 1,311,295,385.40, 1,966,943,078.10 and 1,236,048,588.60

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Solution

The fourth proportional to 1,311,295,385.40, 1,966,943,078.10 and 1,236,048,588.60 is: 1,854,072,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,295,385.40 : 1,966,943,078.10 = 1,236,048,588.60 : x
  2. Step 2: Convert to fraction form
    1,311,295,385.40/1,966,943,078.10 = 1,236,048,588.60/x
  3. Step 3: Cross multiply
    1,311,295,385.40x = 1,966,943,078.10 × 1,236,048,588.60
  4. Step 4: Simplify right side
    1,311,295,385.40x = 2,431,237,215,542,044,160
  5. Step 5: Solve for x
    x = 2,431,237,215,542,044,160/1,311,295,385.40
  6. Step 6: Final answer
    x = 1,854,072,882.90

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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.