Home / 505,320,415.40-757,980,623.10-308,899,821.80

Finding the Fourth Proportional to 505,320,415.40, 757,980,623.10 and 308,899,821.80

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Solution

The fourth proportional to 505,320,415.40, 757,980,623.10 and 308,899,821.80 is: 463,349,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,320,415.40 : 757,980,623.10 = 308,899,821.80 : x
  2. Step 2: Convert to fraction form
    505,320,415.40/757,980,623.10 = 308,899,821.80/x
  3. Step 3: Cross multiply
    505,320,415.40x = 757,980,623.10 × 308,899,821.80
  4. Step 4: Simplify right side
    505,320,415.40x = 234,140,079,403,442,976
  5. Step 5: Solve for x
    x = 234,140,079,403,442,976/505,320,415.40
  6. Step 6: Final answer
    x = 463,349,732.70

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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.