Finding the Fourth Proportional to 2,919,913.47, 4,379,869.11 and 2,126,245.71
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Solution
The fourth proportional to 2,919,913.47, 4,379,869.11 and 2,126,245.71 is: 3,189,367.77
Step by Step Solution
- Step 1: Write the proportion equation
2,919,913.47 : 4,379,869.11 = 2,126,245.71 : x - Step 2: Convert to fraction form
2,919,913.47/4,379,869.11 = 2,126,245.71/x - Step 3: Cross multiply
2,919,913.47x = 4,379,869.11 × 2,126,245.71 - Step 4: Simplify right side
2,919,913.47x = 9,312,677,905,499.02 - Step 5: Solve for x
x = 9,312,677,905,499.02/2,919,913.47 - Step 6: Final answer
x = 3,189,367.77
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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.