Home / 660,509,219.40-990,763,829.10-200,446,650.60

Finding the Fourth Proportional to 660,509,219.40, 990,763,829.10 and 200,446,650.60

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Solution

The fourth proportional to 660,509,219.40, 990,763,829.10 and 200,446,650.60 is: 300,669,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,509,219.40 : 990,763,829.10 = 200,446,650.60 : x
  2. Step 2: Convert to fraction form
    660,509,219.40/990,763,829.10 = 200,446,650.60/x
  3. Step 3: Cross multiply
    660,509,219.40x = 990,763,829.10 × 200,446,650.60
  4. Step 4: Simplify right side
    660,509,219.40x = 198,595,291,078,725,824
  5. Step 5: Solve for x
    x = 198,595,291,078,725,824/660,509,219.40
  6. Step 6: Final answer
    x = 300,669,975.90

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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.