Home / 1,290,410,418,430.20-1,780,757,318,467.80-704,460,264,054.60

Finding the Fourth Proportional to 1,290,410,418,430.20, 1,780,757,318,467.80 and 704,460,264,054.60

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Solution

The fourth proportional to 1,290,410,418,430.20, 1,780,757,318,467.80 and 704,460,264,054.60 is: 972,150,218,928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,410,418,430.20 : 1,780,757,318,467.80 = 704,460,264,054.60 : x
  2. Step 2: Convert to fraction form
    1,290,410,418,430.20/1,780,757,318,467.80 = 704,460,264,054.60/x
  3. Step 3: Cross multiply
    1,290,410,418,430.20x = 1,780,757,318,467.80 × 704,460,264,054.60
  4. Step 4: Simplify right side
    1,290,410,418,430.20x = 1,254,472,770,784,987,931,738,112
  5. Step 5: Solve for x
    x = 1,254,472,770,784,987,931,738,112/1,290,410,418,430.20
  6. Step 6: Final answer
    x = 972,150,218,928.85

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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.