Finding the Fourth Proportional to 330,861,643.70, 496,292,465.55 and 85,217,803.70
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Solution
The fourth proportional to 330,861,643.70, 496,292,465.55 and 85,217,803.70 is: 127,826,705.55
Step by Step Solution
- Step 1: Write the proportion equation
330,861,643.70 : 496,292,465.55 = 85,217,803.70 : x - Step 2: Convert to fraction form
330,861,643.70/496,292,465.55 = 85,217,803.70/x - Step 3: Cross multiply
330,861,643.70x = 496,292,465.55 × 85,217,803.70 - Step 4: Simplify right side
330,861,643.70x = 42,292,953,907,028,912 - Step 5: Solve for x
x = 42,292,953,907,028,912/330,861,643.70 - Step 6: Final answer
x = 127,826,705.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.