Finding the Fourth Proportional to 665,463.36, 918,233.28 and 378,988.80
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Solution
The fourth proportional to 665,463.36, 918,233.28 and 378,988.80 is: 522,944.09
Step by Step Solution
- Step 1: Write the proportion equation
665,463.36 : 918,233.28 = 378,988.80 : x - Step 2: Convert to fraction form
665,463.36/918,233.28 = 378,988.80/x - Step 3: Cross multiply
665,463.36x = 918,233.28 × 378,988.80 - Step 4: Simplify right side
665,463.36x = 348,000,128,907.26 - Step 5: Solve for x
x = 348,000,128,907.26/665,463.36 - Step 6: Final answer
x = 522,944.09
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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.