Home / 689,651,998.80-1,034,603,969.40-280,749,483.60

Finding the Fourth Proportional to 689,651,998.80, 1,034,603,969.40 and 280,749,483.60

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Solution

The fourth proportional to 689,651,998.80, 1,034,603,969.40 and 280,749,483.60 is: 421,175,506.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,651,998.80 : 1,034,603,969.40 = 280,749,483.60 : x
  2. Step 2: Convert to fraction form
    689,651,998.80/1,034,603,969.40 = 280,749,483.60/x
  3. Step 3: Cross multiply
    689,651,998.80x = 1,034,603,969.40 × 280,749,483.60
  4. Step 4: Simplify right side
    689,651,998.80x = 290,464,530,139,560,192
  5. Step 5: Solve for x
    x = 290,464,530,139,560,192/689,651,998.80
  6. Step 6: Final answer
    x = 421,175,506.84

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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.