Home / 505,492,300.20-758,238,450.30-419,327,999.40

Finding the Fourth Proportional to 505,492,300.20, 758,238,450.30 and 419,327,999.40

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Solution

The fourth proportional to 505,492,300.20, 758,238,450.30 and 419,327,999.40 is: 628,991,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,492,300.20 : 758,238,450.30 = 419,327,999.40 : x
  2. Step 2: Convert to fraction form
    505,492,300.20/758,238,450.30 = 419,327,999.40/x
  3. Step 3: Cross multiply
    505,492,300.20x = 758,238,450.30 × 419,327,999.40
  4. Step 4: Simplify right side
    505,492,300.20x = 317,950,612,432,455,296
  5. Step 5: Solve for x
    x = 317,950,612,432,455,296/505,492,300.20
  6. Step 6: Final answer
    x = 628,991,999.10

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1.5x scale

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.