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Finding the Fourth Proportional to 505,318,276.80, 757,977,415.20 and 505,318,276.80

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Solution

The fourth proportional to 505,318,276.80, 757,977,415.20 and 505,318,276.80 is: 757,977,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,318,276.80 : 757,977,415.20 = 505,318,276.80 : x
  2. Step 2: Convert to fraction form
    505,318,276.80/757,977,415.20 = 505,318,276.80/x
  3. Step 3: Cross multiply
    505,318,276.80x = 757,977,415.20 × 505,318,276.80
  4. Step 4: Simplify right side
    505,318,276.80x = 383,019,841,302,182,144
  5. Step 5: Solve for x
    x = 383,019,841,302,182,144/505,318,276.80
  6. Step 6: Final answer
    x = 757,977,415.20

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Double scale
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Similar ratio
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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.