Finding the Fourth Proportional to 10,455,523.20, 15,674,990.40 and 5,727,715.20
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Solution
The fourth proportional to 10,455,523.20, 15,674,990.40 and 5,727,715.20 is: 8,587,028.99
Step by Step Solution
- Step 1: Write the proportion equation
10,455,523.20 : 15,674,990.40 = 5,727,715.20 : x - Step 2: Convert to fraction form
10,455,523.20/15,674,990.40 = 5,727,715.20/x - Step 3: Cross multiply
10,455,523.20x = 15,674,990.40 × 5,727,715.20 - Step 4: Simplify right side
10,455,523.20x = 89,781,880,773,934.08 - Step 5: Solve for x
x = 89,781,880,773,934.08/10,455,523.20 - Step 6: Final answer
x = 8,587,028.99
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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.