Finding the Fourth Proportional to 641,574,070.12, 885,348,534.18 and 348,212,339.56
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Solution
The fourth proportional to 641,574,070.12, 885,348,534.18 and 348,212,339.56 is: 480,520,174.94
Step by Step Solution
- Step 1: Write the proportion equation
641,574,070.12 : 885,348,534.18 = 348,212,339.56 : x - Step 2: Convert to fraction form
641,574,070.12/885,348,534.18 = 348,212,339.56/x - Step 3: Cross multiply
641,574,070.12x = 885,348,534.18 × 348,212,339.56 - Step 4: Simplify right side
641,574,070.12x = 308,289,284,412,834,432 - Step 5: Solve for x
x = 308,289,284,412,834,432/641,574,070.12 - Step 6: Final answer
x = 480,520,174.94
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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.