Finding the Fourth Proportional to 489,212.16, 674,826.12 and 307,636.08
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Solution
The fourth proportional to 489,212.16, 674,826.12 and 307,636.08 is: 424,357.53
Step by Step Solution
- Step 1: Write the proportion equation
489,212.16 : 674,826.12 = 307,636.08 : x - Step 2: Convert to fraction form
489,212.16/674,826.12 = 307,636.08/x - Step 3: Cross multiply
489,212.16x = 674,826.12 × 307,636.08 - Step 4: Simplify right side
489,212.16x = 207,600,862,238.41 - Step 5: Solve for x
x = 207,600,862,238.41/489,212.16 - Step 6: Final answer
x = 424,357.53
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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.