Home / 419,914,585.60-629,871,878.40-394,405,417.60

Finding the Fourth Proportional to 419,914,585.60, 629,871,878.40 and 394,405,417.60

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Solution

The fourth proportional to 419,914,585.60, 629,871,878.40 and 394,405,417.60 is: 591,608,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,914,585.60 : 629,871,878.40 = 394,405,417.60 : x
  2. Step 2: Convert to fraction form
    419,914,585.60/629,871,878.40 = 394,405,417.60/x
  3. Step 3: Cross multiply
    419,914,585.60x = 629,871,878.40 × 394,405,417.60
  4. Step 4: Simplify right side
    419,914,585.60x = 248,424,881,234,848,416
  5. Step 5: Solve for x
    x = 248,424,881,234,848,416/419,914,585.60
  6. Step 6: Final answer
    x = 591,608,126.40

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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.