Finding the Fourth Proportional to 354,521,082.48, 489,320,723.97 and 207,890,605.68
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Solution
The fourth proportional to 354,521,082.48, 489,320,723.97 and 207,890,605.68 is: 286,936,903.63
Step by Step Solution
- Step 1: Write the proportion equation
354,521,082.48 : 489,320,723.97 = 207,890,605.68 : x - Step 2: Convert to fraction form
354,521,082.48/489,320,723.97 = 207,890,605.68/x - Step 3: Cross multiply
354,521,082.48x = 489,320,723.97 × 207,890,605.68 - Step 4: Simplify right side
354,521,082.48x = 101,725,181,677,899,408 - Step 5: Solve for x
x = 101,725,181,677,899,408/354,521,082.48 - Step 6: Final answer
x = 286,936,903.63
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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.