Home / 1,347,809,725.72-2,021,837,967.78-378,454,809.88

Finding the Fourth Proportional to 1,347,809,725.72, 2,021,837,967.78 and 378,454,809.88

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Solution

The fourth proportional to 1,347,809,725.72, 2,021,837,967.78 and 378,454,809.88 is: 567,716,858.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,809,725.72 : 2,021,837,967.78 = 378,454,809.88 : x
  2. Step 2: Convert to fraction form
    1,347,809,725.72/2,021,837,967.78 = 378,454,809.88/x
  3. Step 3: Cross multiply
    1,347,809,725.72x = 2,021,837,967.78 × 378,454,809.88
  4. Step 4: Simplify right side
    1,347,809,725.72x = 765,174,303,704,345,472
  5. Step 5: Solve for x
    x = 765,174,303,704,345,472/1,347,809,725.72
  6. Step 6: Final answer
    x = 567,716,858.77

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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.