Home / 1,242,844,423-1,715,100,992.31-678,333,351.18

Finding the Fourth Proportional to 1,242,844,423, 1,715,100,992.31 and 678,333,351.18

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Solution

The fourth proportional to 1,242,844,423, 1,715,100,992.31 and 678,333,351.18 is: 936,086,755.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,844,423 : 1,715,100,992.31 = 678,333,351.18 : x
  2. Step 2: Convert to fraction form
    1,242,844,423/1,715,100,992.31 = 678,333,351.18/x
  3. Step 3: Cross multiply
    1,242,844,423x = 1,715,100,992.31 × 678,333,351.18
  4. Step 4: Simplify right side
    1,242,844,423x = 1,163,410,203,725,785,600
  5. Step 5: Solve for x
    x = 1,163,410,203,725,785,600/1,242,844,423
  6. Step 6: Final answer
    x = 936,086,755.67

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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.