Home / 689,993,455.74-952,274,467.35-392,707,981.50

Finding the Fourth Proportional to 689,993,455.74, 952,274,467.35 and 392,707,981.50

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Solution

The fourth proportional to 689,993,455.74, 952,274,467.35 and 392,707,981.50 is: 541,984,537.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,993,455.74 : 952,274,467.35 = 392,707,981.50 : x
  2. Step 2: Convert to fraction form
    689,993,455.74/952,274,467.35 = 392,707,981.50/x
  3. Step 3: Cross multiply
    689,993,455.74x = 952,274,467.35 × 392,707,981.50
  4. Step 4: Simplify right side
    689,993,455.74x = 373,965,783,907,006,144
  5. Step 5: Solve for x
    x = 373,965,783,907,006,144/689,993,455.74
  6. Step 6: Final answer
    x = 541,984,537.38

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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.