Finding the Fourth Proportional to 7,221,495.87, 10,768,598.46 and 7,156,738.80
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Solution
The fourth proportional to 7,221,495.87, 10,768,598.46 and 7,156,738.80 is: 10,672,033.58
Step by Step Solution
- Step 1: Write the proportion equation
7,221,495.87 : 10,768,598.46 = 7,156,738.80 : x - Step 2: Convert to fraction form
7,221,495.87/10,768,598.46 = 7,156,738.80/x - Step 3: Cross multiply
7,221,495.87x = 10,768,598.46 × 7,156,738.80 - Step 4: Simplify right side
7,221,495.87x = 77,068,046,420,302.25 - Step 5: Solve for x
x = 77,068,046,420,302.25/7,221,495.87 - Step 6: Final answer
x = 10,672,033.58
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.