Home / 1,212,787,729.80-1,819,181,769.30-292,664,071.80

Finding the Fourth Proportional to 1,212,787,729.80, 1,819,181,769.30 and 292,664,071.80

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Solution

The fourth proportional to 1,212,787,729.80, 1,819,181,769.30 and 292,664,071.80 is: 438,996,149.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,787,729.80 : 1,819,181,769.30 = 292,664,071.80 : x
  2. Step 2: Convert to fraction form
    1,212,787,729.80/1,819,181,769.30 = 292,664,071.80/x
  3. Step 3: Cross multiply
    1,212,787,729.80x = 1,819,181,769.30 × 292,664,071.80
  4. Step 4: Simplify right side
    1,212,787,729.80x = 532,409,143,947,666,240
  5. Step 5: Solve for x
    x = 532,409,143,947,666,240/1,212,787,729.80
  6. Step 6: Final answer
    x = 438,996,149.83

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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.