Finding the Fourth Proportional to 648,217,209.87, 894,539,793.29 and 354,861,777.87
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Solution
The fourth proportional to 648,217,209.87, 894,539,793.29 and 354,861,777.87 is: 489,709,277.36
Step by Step Solution
- Step 1: Write the proportion equation
648,217,209.87 : 894,539,793.29 = 354,861,777.87 : x - Step 2: Convert to fraction form
648,217,209.87/894,539,793.29 = 354,861,777.87/x - Step 3: Cross multiply
648,217,209.87x = 894,539,793.29 × 354,861,777.87 - Step 4: Simplify right side
648,217,209.87x = 317,437,981,420,577,408 - Step 5: Solve for x
x = 317,437,981,420,577,408/648,217,209.87 - Step 6: Final answer
x = 489,709,277.36
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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.