Finding the Fourth Proportional to 648,217,214.67, 894,539,799.99 and 354,861,782.67
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Solution
The fourth proportional to 648,217,214.67, 894,539,799.99 and 354,861,782.67 is: 489,709,284.03
Step by Step Solution
- Step 1: Write the proportion equation
648,217,214.67 : 894,539,799.99 = 354,861,782.67 : x - Step 2: Convert to fraction form
648,217,214.67/894,539,799.99 = 354,861,782.67/x - Step 3: Cross multiply
648,217,214.67x = 894,539,799.99 × 354,861,782.67 - Step 4: Simplify right side
648,217,214.67x = 317,437,988,093,716,672 - Step 5: Solve for x
x = 317,437,988,093,716,672/648,217,214.67 - Step 6: Final answer
x = 489,709,284.03
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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.