Home / 1,279,057,022.78-1,918,768,551.63-393,817,283.43

Finding the Fourth Proportional to 1,279,057,022.78, 1,918,768,551.63 and 393,817,283.43

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Solution

The fourth proportional to 1,279,057,022.78, 1,918,768,551.63 and 393,817,283.43 is: 590,782,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,057,022.78 : 1,918,768,551.63 = 393,817,283.43 : x
  2. Step 2: Convert to fraction form
    1,279,057,022.78/1,918,768,551.63 = 393,817,283.43/x
  3. Step 3: Cross multiply
    1,279,057,022.78x = 1,918,768,551.63 × 393,817,283.43
  4. Step 4: Simplify right side
    1,279,057,022.78x = 755,644,218,531,644,800
  5. Step 5: Solve for x
    x = 755,644,218,531,644,800/1,279,057,022.78
  6. Step 6: Final answer
    x = 590,782,275.60

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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.