Finding the Fourth Proportional to 487,616.18, 672,639.44 and 283,644.14
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Solution
The fourth proportional to 487,616.18, 672,639.44 and 283,644.14 is: 391,271.34
Step by Step Solution
- Step 1: Write the proportion equation
487,616.18 : 672,639.44 = 283,644.14 : x - Step 2: Convert to fraction form
487,616.18/672,639.44 = 283,644.14/x - Step 3: Cross multiply
487,616.18x = 672,639.44 × 283,644.14 - Step 4: Simplify right side
487,616.18x = 190,790,235,488.88 - Step 5: Solve for x
x = 190,790,235,488.88/487,616.18 - Step 6: Final answer
x = 391,271.34
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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.