Finding the Fourth Proportional to 634,284,521.08, 875,687,913.84 and 399,536,402.56
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Solution
The fourth proportional to 634,284,521.08, 875,687,913.84 and 399,536,402.56 is: 551,596,621.44
Step by Step Solution
- Step 1: Write the proportion equation
634,284,521.08 : 875,687,913.84 = 399,536,402.56 : x - Step 2: Convert to fraction form
634,284,521.08/875,687,913.84 = 399,536,402.56/x - Step 3: Cross multiply
634,284,521.08x = 875,687,913.84 × 399,536,402.56 - Step 4: Simplify right side
634,284,521.08x = 349,869,198,860,904,832 - Step 5: Solve for x
x = 349,869,198,860,904,832/634,284,521.08 - Step 6: Final answer
x = 551,596,621.44
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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.