Finding the Fourth Proportional to 676,921.44, 934,119.54 and 405,139.08
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Solution
The fourth proportional to 676,921.44, 934,119.54 and 405,139.08 is: 559,072.75
Step by Step Solution
- Step 1: Write the proportion equation
676,921.44 : 934,119.54 = 405,139.08 : x - Step 2: Convert to fraction form
676,921.44/934,119.54 = 405,139.08/x - Step 3: Cross multiply
676,921.44x = 934,119.54 × 405,139.08 - Step 4: Simplify right side
676,921.44x = 378,448,331,045.62 - Step 5: Solve for x
x = 378,448,331,045.62/676,921.44 - Step 6: Final answer
x = 559,072.75
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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.