Home / 412,194,630.40-618,291,945.60-208,121,286.40

Finding the Fourth Proportional to 412,194,630.40, 618,291,945.60 and 208,121,286.40

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Solution

The fourth proportional to 412,194,630.40, 618,291,945.60 and 208,121,286.40 is: 312,181,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,194,630.40 : 618,291,945.60 = 208,121,286.40 : x
  2. Step 2: Convert to fraction form
    412,194,630.40/618,291,945.60 = 208,121,286.40/x
  3. Step 3: Cross multiply
    412,194,630.40x = 618,291,945.60 × 208,121,286.40
  4. Step 4: Simplify right side
    412,194,630.40x = 128,679,715,089,030,832
  5. Step 5: Solve for x
    x = 128,679,715,089,030,832/412,194,630.40
  6. Step 6: Final answer
    x = 312,181,929.60

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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.