Home / 431,255,603.20-646,883,404.80-419,918,195.20

Finding the Fourth Proportional to 431,255,603.20, 646,883,404.80 and 419,918,195.20

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Solution

The fourth proportional to 431,255,603.20, 646,883,404.80 and 419,918,195.20 is: 629,877,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,255,603.20 : 646,883,404.80 = 419,918,195.20 : x
  2. Step 2: Convert to fraction form
    431,255,603.20/646,883,404.80 = 419,918,195.20/x
  3. Step 3: Cross multiply
    431,255,603.20x = 646,883,404.80 × 419,918,195.20
  4. Step 4: Simplify right side
    431,255,603.20x = 271,638,111,848,446,976
  5. Step 5: Solve for x
    x = 271,638,111,848,446,976/431,255,603.20
  6. Step 6: Final answer
    x = 629,877,292.80

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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.