Finding the Fourth Proportional to 521,658.18, 720,134.78 and 349,688.56
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Solution
The fourth proportional to 521,658.18, 720,134.78 and 349,688.56 is: 482,735.45
Step by Step Solution
- Step 1: Write the proportion equation
521,658.18 : 720,134.78 = 349,688.56 : x - Step 2: Convert to fraction form
521,658.18/720,134.78 = 349,688.56/x - Step 3: Cross multiply
521,658.18x = 720,134.78 × 349,688.56 - Step 4: Simplify right side
521,658.18x = 251,822,894,224.12 - Step 5: Solve for x
x = 251,822,894,224.12/521,658.18 - Step 6: Final answer
x = 482,735.45
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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.