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Finding the Fourth Proportional to 505,490,680.80, 758,236,021.20 and 505,490,680.80

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Solution

The fourth proportional to 505,490,680.80, 758,236,021.20 and 505,490,680.80 is: 758,236,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,490,680.80 : 758,236,021.20 = 505,490,680.80 : x
  2. Step 2: Convert to fraction form
    505,490,680.80/758,236,021.20 = 505,490,680.80/x
  3. Step 3: Cross multiply
    505,490,680.80x = 758,236,021.20 × 505,490,680.80
  4. Step 4: Simplify right side
    505,490,680.80x = 383,281,242,563,471,296
  5. Step 5: Solve for x
    x = 383,281,242,563,471,296/505,490,680.80
  6. Step 6: Final answer
    x = 758,236,021.20

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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.