Finding the Fourth Proportional to 515,564,546.83, 711,539,658.27 and 289,540,676.08
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Solution
The fourth proportional to 515,564,546.83, 711,539,658.27 and 289,540,676.08 is: 399,600,156.72
Step by Step Solution
- Step 1: Write the proportion equation
515,564,546.83 : 711,539,658.27 = 289,540,676.08 : x - Step 2: Convert to fraction form
515,564,546.83/711,539,658.27 = 289,540,676.08/x - Step 3: Cross multiply
515,564,546.83x = 711,539,658.27 × 289,540,676.08 - Step 4: Simplify right side
515,564,546.83x = 206,019,673,713,227,936 - Step 5: Solve for x
x = 206,019,673,713,227,936/515,564,546.83 - Step 6: Final answer
x = 399,600,156.72
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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.