Home / 1,279,057,013.31-1,918,768,537.44-393,817,274.00

Finding the Fourth Proportional to 1,279,057,013.31, 1,918,768,537.44 and 393,817,274.00

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Solution

The fourth proportional to 1,279,057,013.31, 1,918,768,537.44 and 393,817,274.00 is: 590,782,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,057,013.31 : 1,918,768,537.44 = 393,817,274.00 : x
  2. Step 2: Convert to fraction form
    1,279,057,013.31/1,918,768,537.44 = 393,817,274.00/x
  3. Step 3: Cross multiply
    1,279,057,013.31x = 1,918,768,537.44 × 393,817,274.00
  4. Step 4: Simplify right side
    1,279,057,013.31x = 755,644,194,841,993,984
  5. Step 5: Solve for x
    x = 755,644,194,841,993,984/1,279,057,013.31
  6. Step 6: Final answer
    x = 590,782,261.45

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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.