Home / 1,279,057,004.55-1,918,768,524.31-393,817,265.23

Finding the Fourth Proportional to 1,279,057,004.55, 1,918,768,524.31 and 393,817,265.23

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Solution

The fourth proportional to 1,279,057,004.55, 1,918,768,524.31 and 393,817,265.23 is: 590,782,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,057,004.55 : 1,918,768,524.31 = 393,817,265.23 : x
  2. Step 2: Convert to fraction form
    1,279,057,004.55/1,918,768,524.31 = 393,817,265.23/x
  3. Step 3: Cross multiply
    1,279,057,004.55x = 1,918,768,524.31 × 393,817,265.23
  4. Step 4: Simplify right side
    1,279,057,004.55x = 755,644,172,853,166,976
  5. Step 5: Solve for x
    x = 755,644,172,853,166,976/1,279,057,004.55
  6. Step 6: Final answer
    x = 590,782,248.30

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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.