Finding the Fourth Proportional to 868,509.63, 1,198,542.47 and 486,539.15
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Solution
The fourth proportional to 868,509.63, 1,198,542.47 and 486,539.15 is: 671,423.56
Step by Step Solution
- Step 1: Write the proportion equation
868,509.63 : 1,198,542.47 = 486,539.15 : x - Step 2: Convert to fraction form
868,509.63/1,198,542.47 = 486,539.15/x - Step 3: Cross multiply
868,509.63x = 1,198,542.47 × 486,539.15 - Step 4: Simplify right side
868,509.63x = 583,137,826,167.29 - Step 5: Solve for x
x = 583,137,826,167.29/868,509.63 - Step 6: Final answer
x = 671,423.56
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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.