Finding the Fourth Proportional to 399,906,583.78, 551,648,921.99 and 232,624,013.26
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Solution
The fourth proportional to 399,906,583.78, 551,648,921.99 and 232,624,013.26 is: 320,891,906.63
Step by Step Solution
- Step 1: Write the proportion equation
399,906,583.78 : 551,648,921.99 = 232,624,013.26 : x - Step 2: Convert to fraction form
399,906,583.78/551,648,921.99 = 232,624,013.26/x - Step 3: Cross multiply
399,906,583.78x = 551,648,921.99 × 232,624,013.26 - Step 4: Simplify right side
399,906,583.78x = 128,326,786,142,703,344 - Step 5: Solve for x
x = 128,326,786,142,703,344/399,906,583.78 - Step 6: Final answer
x = 320,891,906.63
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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.