Finding the Fourth Proportional to 1,490,184,863.26, 2,056,498,977.80 and 821,173,003.58
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Solution
The fourth proportional to 1,490,184,863.26, 2,056,498,977.80 and 821,173,003.58 is: 1,133,242,917.78
Step by Step Solution
- Step 1: Write the proportion equation
1,490,184,863.26 : 2,056,498,977.80 = 821,173,003.58 : x - Step 2: Convert to fraction form
1,490,184,863.26/2,056,498,977.80 = 821,173,003.58/x - Step 3: Cross multiply
1,490,184,863.26x = 2,056,498,977.80 × 821,173,003.58 - Step 4: Simplify right side
1,490,184,863.26x = 1,688,741,442,466,419,968 - Step 5: Solve for x
x = 1,688,741,442,466,419,968/1,490,184,863.26 - Step 6: Final answer
x = 1,133,242,917.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.