Finding the Fourth Proportional to 648,217,214.17, 894,539,799.30 and 354,861,782.17
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Solution
The fourth proportional to 648,217,214.17, 894,539,799.30 and 354,861,782.17 is: 489,709,283.34
Step by Step Solution
- Step 1: Write the proportion equation
648,217,214.17 : 894,539,799.30 = 354,861,782.17 : x - Step 2: Convert to fraction form
648,217,214.17/894,539,799.30 = 354,861,782.17/x - Step 3: Cross multiply
648,217,214.17x = 894,539,799.30 × 354,861,782.17 - Step 4: Simplify right side
648,217,214.17x = 317,437,987,401,592,128 - Step 5: Solve for x
x = 317,437,987,401,592,128/648,217,214.17 - Step 6: Final answer
x = 489,709,283.34
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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.