Finding the Fourth Proportional to 421,539,963.57, 581,786,028.17 and 242,889,649.23
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Solution
The fourth proportional to 421,539,963.57, 581,786,028.17 and 242,889,649.23 is: 335,222,793.85
Step by Step Solution
- Step 1: Write the proportion equation
421,539,963.57 : 581,786,028.17 = 242,889,649.23 : x - Step 2: Convert to fraction form
421,539,963.57/581,786,028.17 = 242,889,649.23/x - Step 3: Cross multiply
421,539,963.57x = 581,786,028.17 × 242,889,649.23 - Step 4: Simplify right side
421,539,963.57x = 141,309,804,307,911,728 - Step 5: Solve for x
x = 141,309,804,307,911,728/421,539,963.57 - Step 6: Final answer
x = 335,222,793.85
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.