Home / 1,279,057,029.92-1,918,768,562.35-393,817,290.55

Finding the Fourth Proportional to 1,279,057,029.92, 1,918,768,562.35 and 393,817,290.55

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Solution

The fourth proportional to 1,279,057,029.92, 1,918,768,562.35 and 393,817,290.55 is: 590,782,286.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,057,029.92 : 1,918,768,562.35 = 393,817,290.55 : x
  2. Step 2: Convert to fraction form
    1,279,057,029.92/1,918,768,562.35 = 393,817,290.55/x
  3. Step 3: Cross multiply
    1,279,057,029.92x = 1,918,768,562.35 × 393,817,290.55
  4. Step 4: Simplify right side
    1,279,057,029.92x = 755,644,236,417,195,776
  5. Step 5: Solve for x
    x = 755,644,236,417,195,776/1,279,057,029.92
  6. Step 6: Final answer
    x = 590,782,286.28

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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.