Finding the Fourth Proportional to 523,328,850.21, 722,198,656.08 and 288,387,918.01
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Solution
The fourth proportional to 523,328,850.21, 722,198,656.08 and 288,387,918.01 is: 397,977,995.53
Step by Step Solution
- Step 1: Write the proportion equation
523,328,850.21 : 722,198,656.08 = 288,387,918.01 : x - Step 2: Convert to fraction form
523,328,850.21/722,198,656.08 = 288,387,918.01/x - Step 3: Cross multiply
523,328,850.21x = 722,198,656.08 × 288,387,918.01 - Step 4: Simplify right side
523,328,850.21x = 208,273,366,811,478,304 - Step 5: Solve for x
x = 208,273,366,811,478,304/523,328,850.21 - Step 6: Final answer
x = 397,977,995.53
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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.