Home / 979,932,857.80-1,470,186,262.78-289,858,488.36

Finding the Fourth Proportional to 979,932,857.80, 1,470,186,262.78 and 289,858,488.36

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Solution

The fourth proportional to 979,932,857.80, 1,470,186,262.78 and 289,858,488.36 is: 434,872,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,932,857.80 : 1,470,186,262.78 = 289,858,488.36 : x
  2. Step 2: Convert to fraction form
    979,932,857.80/1,470,186,262.78 = 289,858,488.36/x
  3. Step 3: Cross multiply
    979,932,857.80x = 1,470,186,262.78 × 289,858,488.36
  4. Step 4: Simplify right side
    979,932,857.80x = 426,145,967,737,048,512
  5. Step 5: Solve for x
    x = 426,145,967,737,048,512/979,932,857.80
  6. Step 6: Final answer
    x = 434,872,618.41

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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.