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Finding the Fourth Proportional to 1,985,738,212.80, 2,978,599,322.88 and 605,548,756.80

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Solution

The fourth proportional to 1,985,738,212.80, 2,978,599,322.88 and 605,548,756.80 is: 908,320,696.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,738,212.80 : 2,978,599,322.88 = 605,548,756.80 : x
  2. Step 2: Convert to fraction form
    1,985,738,212.80/2,978,599,322.88 = 605,548,756.80/x
  3. Step 3: Cross multiply
    1,985,738,212.80x = 2,978,599,322.88 × 605,548,756.80
  4. Step 4: Simplify right side
    1,985,738,212.80x = 1,803,687,116,975,305,728
  5. Step 5: Solve for x
    x = 1,803,687,116,975,305,728/1,985,738,212.80
  6. Step 6: Final answer
    x = 908,320,696.73

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1.5x scale

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.