Finding the Fourth Proportional to 669,084,623.68, 923,282,651.41 and 386,845,172.11
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Solution
The fourth proportional to 669,084,623.68, 923,282,651.41 and 386,845,172.11 is: 533,815,041.55
Step by Step Solution
- Step 1: Write the proportion equation
669,084,623.68 : 923,282,651.41 = 386,845,172.11 : x - Step 2: Convert to fraction form
669,084,623.68/923,282,651.41 = 386,845,172.11/x - Step 3: Cross multiply
669,084,623.68x = 923,282,651.41 × 386,845,172.11 - Step 4: Simplify right side
669,084,623.68x = 357,167,436,190,878,592 - Step 5: Solve for x
x = 357,167,436,190,878,592/669,084,623.68 - Step 6: Final answer
x = 533,815,041.55
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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.