Finding the Fourth Proportional to 521,540,258.16, 719,731,285.08 and 286,590,979.44
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Solution
The fourth proportional to 521,540,258.16, 719,731,285.08 and 286,590,979.44 is: 395,498,699.66
Step by Step Solution
- Step 1: Write the proportion equation
521,540,258.16 : 719,731,285.08 = 286,590,979.44 : x - Step 2: Convert to fraction form
521,540,258.16/719,731,285.08 = 286,590,979.44/x - Step 3: Cross multiply
521,540,258.16x = 719,731,285.08 × 286,590,979.44 - Step 4: Simplify right side
521,540,258.16x = 206,268,493,924,687,072 - Step 5: Solve for x
x = 206,268,493,924,687,072/521,540,258.16 - Step 6: Final answer
x = 395,498,699.66
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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.