Finding the Fourth Proportional to 489,966,428.40, 735,093,130.64 and 144,929,243.68
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Solution
The fourth proportional to 489,966,428.40, 735,093,130.64 and 144,929,243.68 is: 217,436,308.45
Step by Step Solution
- Step 1: Write the proportion equation
489,966,428.40 : 735,093,130.64 = 144,929,243.68 : x - Step 2: Convert to fraction form
489,966,428.40/735,093,130.64 = 144,929,243.68/x - Step 3: Cross multiply
489,966,428.40x = 735,093,130.64 × 144,929,243.68 - Step 4: Simplify right side
489,966,428.40x = 106,536,491,458,018,640 - Step 5: Solve for x
x = 106,536,491,458,018,640/489,966,428.40 - Step 6: Final answer
x = 217,436,308.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.