Home / 1,392,422,515-2,088,406,629.25-409,619,287.82

Finding the Fourth Proportional to 1,392,422,515, 2,088,406,629.25 and 409,619,287.82

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Solution

The fourth proportional to 1,392,422,515, 2,088,406,629.25 and 409,619,287.82 is: 614,362,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,422,515 : 2,088,406,629.25 = 409,619,287.82 : x
  2. Step 2: Convert to fraction form
    1,392,422,515/2,088,406,629.25 = 409,619,287.82/x
  3. Step 3: Cross multiply
    1,392,422,515x = 2,088,406,629.25 × 409,619,287.82
  4. Step 4: Simplify right side
    1,392,422,515x = 855,451,636,151,951,744
  5. Step 5: Solve for x
    x = 855,451,636,151,951,744/1,392,422,515
  6. Step 6: Final answer
    x = 614,362,111.31

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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.