Finding the Fourth Proportional to 509,778.05, 703,318.49 and 316,116.15
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Solution
The fourth proportional to 509,778.05, 703,318.49 and 316,116.15 is: 436,131.63
Step by Step Solution
- Step 1: Write the proportion equation
509,778.05 : 703,318.49 = 316,116.15 : x - Step 2: Convert to fraction form
509,778.05/703,318.49 = 316,116.15/x - Step 3: Cross multiply
509,778.05x = 703,318.49 × 316,116.15 - Step 4: Simplify right side
509,778.05x = 222,330,331,702.03 - Step 5: Solve for x
x = 222,330,331,702.03/509,778.05 - Step 6: Final answer
x = 436,131.63
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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.