Home / 505,490,003.20-758,235,004.80-419,325,702.40

Finding the Fourth Proportional to 505,490,003.20, 758,235,004.80 and 419,325,702.40

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Solution

The fourth proportional to 505,490,003.20, 758,235,004.80 and 419,325,702.40 is: 628,988,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,490,003.20 : 758,235,004.80 = 419,325,702.40 : x
  2. Step 2: Convert to fraction form
    505,490,003.20/758,235,004.80 = 419,325,702.40/x
  3. Step 3: Cross multiply
    505,490,003.20x = 758,235,004.80 × 419,325,702.40
  4. Step 4: Simplify right side
    505,490,003.20x = 317,947,425,972,027,328
  5. Step 5: Solve for x
    x = 317,947,425,972,027,328/505,490,003.20
  6. Step 6: Final answer
    x = 628,988,553.60

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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.