Finding the Fourth Proportional to 379,979,397.47, 524,367,560.69 and 212,717,032.40
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Solution
The fourth proportional to 379,979,397.47, 524,367,560.69 and 212,717,032.40 is: 293,547,261.09
Step by Step Solution
- Step 1: Write the proportion equation
379,979,397.47 : 524,367,560.69 = 212,717,032.40 : x - Step 2: Convert to fraction form
379,979,397.47/524,367,560.69 = 212,717,032.40/x - Step 3: Cross multiply
379,979,397.47x = 524,367,560.69 × 212,717,032.40 - Step 4: Simplify right side
379,979,397.47x = 111,541,911,397,848,720 - Step 5: Solve for x
x = 111,541,911,397,848,720/379,979,397.47 - Step 6: Final answer
x = 293,547,261.09
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.