Finding the Fourth Proportional to 641,232,619.80, 884,902,730.46 and 347,877,187.80
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Solution
The fourth proportional to 641,232,619.80, 884,902,730.46 and 347,877,187.80 is: 480,071,449.65
Step by Step Solution
- Step 1: Write the proportion equation
641,232,619.80 : 884,902,730.46 = 347,877,187.80 : x - Step 2: Convert to fraction form
641,232,619.80/884,902,730.46 = 347,877,187.80/x - Step 3: Cross multiply
641,232,619.80x = 884,902,730.46 × 347,877,187.80 - Step 4: Simplify right side
641,232,619.80x = 307,837,473,348,966,208 - Step 5: Solve for x
x = 307,837,473,348,966,208/641,232,619.80 - Step 6: Final answer
x = 480,071,449.65
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1.5x scale
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.