Finding the Fourth Proportional to 2,487,970,879.36, 3,731,970,269.87 and 829,873,612.30
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Solution
The fourth proportional to 2,487,970,879.36, 3,731,970,269.87 and 829,873,612.30 is: 1,244,815,071.81
Step by Step Solution
- Step 1: Write the proportion equation
2,487,970,879.36 : 3,731,970,269.87 = 829,873,612.30 : x - Step 2: Convert to fraction form
2,487,970,879.36/3,731,970,269.87 = 829,873,612.30/x - Step 3: Cross multiply
2,487,970,879.36x = 3,731,970,269.87 × 829,873,612.30 - Step 4: Simplify right side
2,487,970,879.36x = 3,097,063,648,858,420,224 - Step 5: Solve for x
x = 3,097,063,648,858,420,224/2,487,970,879.36 - Step 6: Final answer
x = 1,244,815,071.81
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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.