Finding the Fourth Proportional to 918,962,308.08, 1,268,176,078.80 and 501,276,450.96
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Solution
The fourth proportional to 918,962,308.08, 1,268,176,078.80 and 501,276,450.96 is: 691,765,917.26
Step by Step Solution
- Step 1: Write the proportion equation
918,962,308.08 : 1,268,176,078.80 = 501,276,450.96 : x - Step 2: Convert to fraction form
918,962,308.08/1,268,176,078.80 = 501,276,450.96/x - Step 3: Cross multiply
918,962,308.08x = 1,268,176,078.80 × 501,276,450.96 - Step 4: Simplify right side
918,962,308.08x = 635,706,803,973,233,280 - Step 5: Solve for x
x = 635,706,803,973,233,280/918,962,308.08 - Step 6: Final answer
x = 691,765,917.26
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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.