Finding the Fourth Proportional to 1,618,214,120.68, 2,427,322,360.86 and 391,383,753.64
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Solution
The fourth proportional to 1,618,214,120.68, 2,427,322,360.86 and 391,383,753.64 is: 587,075,915.82
Step by Step Solution
- Step 1: Write the proportion equation
1,618,214,120.68 : 2,427,322,360.86 = 391,383,753.64 : x - Step 2: Convert to fraction form
1,618,214,120.68/2,427,322,360.86 = 391,383,753.64/x - Step 3: Cross multiply
1,618,214,120.68x = 2,427,322,360.86 × 391,383,753.64 - Step 4: Simplify right side
1,618,214,120.68x = 950,014,536,887,693,440 - Step 5: Solve for x
x = 950,014,536,887,693,440/1,618,214,120.68 - Step 6: Final answer
x = 587,075,915.82
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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.