Finding the Fourth Proportional to 386,501.68, 579,770.70 and 318,908.31
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Solution
The fourth proportional to 386,501.68, 579,770.70 and 318,908.31 is: 478,377.47
Step by Step Solution
- Step 1: Write the proportion equation
386,501.68 : 579,770.70 = 318,908.31 : x - Step 2: Convert to fraction form
386,501.68/579,770.70 = 318,908.31/x - Step 3: Cross multiply
386,501.68x = 579,770.70 × 318,908.31 - Step 4: Simplify right side
386,501.68x = 184,893,694,124.52 - Step 5: Solve for x
x = 184,893,694,124.52/386,501.68 - Step 6: Final answer
x = 478,377.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.