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Finding the Fourth Proportional to 505,508,237.80, 757,128,615.90 and 505,508,237.80

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Solution

The fourth proportional to 505,508,237.80, 757,128,615.90 and 505,508,237.80 is: 757,128,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,508,237.80 : 757,128,615.90 = 505,508,237.80 : x
  2. Step 2: Convert to fraction form
    505,508,237.80/757,128,615.90 = 505,508,237.80/x
  3. Step 3: Cross multiply
    505,508,237.80x = 757,128,615.90 × 505,508,237.80
  4. Step 4: Simplify right side
    505,508,237.80x = 382,734,752,411,562,048
  5. Step 5: Solve for x
    x = 382,734,752,411,562,048/505,508,237.80
  6. Step 6: Final answer
    x = 757,128,615.90

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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.