Finding the Fourth Proportional to 648,217,210.87, 894,539,794.67 and 354,861,778.87
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Solution
The fourth proportional to 648,217,210.87, 894,539,794.67 and 354,861,778.87 is: 489,709,278.75
Step by Step Solution
- Step 1: Write the proportion equation
648,217,210.87 : 894,539,794.67 = 354,861,778.87 : x - Step 2: Convert to fraction form
648,217,210.87/894,539,794.67 = 354,861,778.87/x - Step 3: Cross multiply
648,217,210.87x = 894,539,794.67 × 354,861,778.87 - Step 4: Simplify right side
648,217,210.87x = 317,437,982,806,600,704 - Step 5: Solve for x
x = 317,437,982,806,600,704/648,217,210.87 - Step 6: Final answer
x = 489,709,278.75
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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.