Home / 505,205,140.20-757,807,710.30-287,526,906.60

Finding the Fourth Proportional to 505,205,140.20, 757,807,710.30 and 287,526,906.60

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Solution

The fourth proportional to 505,205,140.20, 757,807,710.30 and 287,526,906.60 is: 431,290,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,205,140.20 : 757,807,710.30 = 287,526,906.60 : x
  2. Step 2: Convert to fraction form
    505,205,140.20/757,807,710.30 = 287,526,906.60/x
  3. Step 3: Cross multiply
    505,205,140.20x = 757,807,710.30 × 287,526,906.60
  4. Step 4: Simplify right side
    505,205,140.20x = 217,890,106,740,187,968
  5. Step 5: Solve for x
    x = 217,890,106,740,187,968/505,205,140.20
  6. Step 6: Final answer
    x = 431,290,359.90

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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.