Home / 1,259,756,429.80-1,889,634,644.70-339,725,770.60

Finding the Fourth Proportional to 1,259,756,429.80, 1,889,634,644.70 and 339,725,770.60

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Solution

The fourth proportional to 1,259,756,429.80, 1,889,634,644.70 and 339,725,770.60 is: 509,588,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,756,429.80 : 1,889,634,644.70 = 339,725,770.60 : x
  2. Step 2: Convert to fraction form
    1,259,756,429.80/1,889,634,644.70 = 339,725,770.60/x
  3. Step 3: Cross multiply
    1,259,756,429.80x = 1,889,634,644.70 × 339,725,770.60
  4. Step 4: Simplify right side
    1,259,756,429.80x = 641,957,585,823,164,800
  5. Step 5: Solve for x
    x = 641,957,585,823,164,800/1,259,756,429.80
  6. Step 6: Final answer
    x = 509,588,655.90

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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.