Home / 1,131,375,667.47-1,561,434,341.27-685,325,943.06

Finding the Fourth Proportional to 1,131,375,667.47, 1,561,434,341.27 and 685,325,943.06

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Solution

The fourth proportional to 1,131,375,667.47, 1,561,434,341.27 and 685,325,943.06 is: 945,832,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,375,667.47 : 1,561,434,341.27 = 685,325,943.06 : x
  2. Step 2: Convert to fraction form
    1,131,375,667.47/1,561,434,341.27 = 685,325,943.06/x
  3. Step 3: Cross multiply
    1,131,375,667.47x = 1,561,434,341.27 × 685,325,943.06
  4. Step 4: Simplify right side
    1,131,375,667.47x = 1,070,091,462,453,705,984
  5. Step 5: Solve for x
    x = 1,070,091,462,453,705,984/1,131,375,667.47
  6. Step 6: Final answer
    x = 945,832,134.47

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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.