Home / 1,320,149,028-1,821,820,158.72-725,433,666.24

Finding the Fourth Proportional to 1,320,149,028, 1,821,820,158.72 and 725,433,666.24

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Solution

The fourth proportional to 1,320,149,028, 1,821,820,158.72 and 725,433,666.24 is: 1,001,106,427.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,149,028 : 1,821,820,158.72 = 725,433,666.24 : x
  2. Step 2: Convert to fraction form
    1,320,149,028/1,821,820,158.72 = 725,433,666.24/x
  3. Step 3: Cross multiply
    1,320,149,028x = 1,821,820,158.72 × 725,433,666.24
  4. Step 4: Simplify right side
    1,320,149,028x = 1,321,609,676,970,188,288
  5. Step 5: Solve for x
    x = 1,321,609,676,970,188,288/1,320,149,028
  6. Step 6: Final answer
    x = 1,001,106,427.33

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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.