Finding the Fourth Proportional to 489,108.06, 674,658.47 and 353,341.53
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Solution
The fourth proportional to 489,108.06, 674,658.47 and 353,341.53 is: 487,386.89
Step by Step Solution
- Step 1: Write the proportion equation
489,108.06 : 674,658.47 = 353,341.53 : x - Step 2: Convert to fraction form
489,108.06/674,658.47 = 353,341.53/x - Step 3: Cross multiply
489,108.06x = 674,658.47 × 353,341.53 - Step 4: Simplify right side
489,108.06x = 238,384,854,250.55 - Step 5: Solve for x
x = 238,384,854,250.55/489,108.06 - Step 6: Final answer
x = 487,386.89
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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.