Home / 412,035,975.90-618,771,409.20-218,325,731.40

Finding the Fourth Proportional to 412,035,975.90, 618,771,409.20 and 218,325,731.40

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Solution

The fourth proportional to 412,035,975.90, 618,771,409.20 and 218,325,731.40 is: 327,868,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,035,975.90 : 618,771,409.20 = 218,325,731.40 : x
  2. Step 2: Convert to fraction form
    412,035,975.90/618,771,409.20 = 218,325,731.40/x
  3. Step 3: Cross multiply
    412,035,975.90x = 618,771,409.20 × 218,325,731.40
  4. Step 4: Simplify right side
    412,035,975.90x = 135,093,720,482,998,704
  5. Step 5: Solve for x
    x = 135,093,720,482,998,704/412,035,975.90
  6. Step 6: Final answer
    x = 327,868,750.27

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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.