Finding the Fourth Proportional to 384,197,426.43, 530,192,619.53 and 207,985,416.09
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Solution
The fourth proportional to 384,197,426.43, 530,192,619.53 and 207,985,416.09 is: 287,019,966.81
Step by Step Solution
- Step 1: Write the proportion equation
384,197,426.43 : 530,192,619.53 = 207,985,416.09 : x - Step 2: Convert to fraction form
384,197,426.43/530,192,619.53 = 207,985,416.09/x - Step 3: Cross multiply
384,197,426.43x = 530,192,619.53 × 207,985,416.09 - Step 4: Simplify right side
384,197,426.43x = 110,272,332,580,794,112 - Step 5: Solve for x
x = 110,272,332,580,794,112/384,197,426.43 - Step 6: Final answer
x = 287,019,966.81
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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.