Finding the Fourth Proportional to 493,503.10, 681,038.97 and 289,557.49
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Solution
The fourth proportional to 493,503.10, 681,038.97 and 289,557.49 is: 399,592.09
Step by Step Solution
- Step 1: Write the proportion equation
493,503.10 : 681,038.97 = 289,557.49 : x - Step 2: Convert to fraction form
493,503.10/681,038.97 = 289,557.49/x - Step 3: Cross multiply
493,503.10x = 681,038.97 × 289,557.49 - Step 4: Simplify right side
493,503.10x = 197,199,934,745.39 - Step 5: Solve for x
x = 197,199,934,745.39/493,503.10 - Step 6: Final answer
x = 399,592.09
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1.5x scale
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.