Finding the Fourth Proportional to 1,379,730.21, 2,069,595.87 and 620,685.09
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Solution
The fourth proportional to 1,379,730.21, 2,069,595.87 and 620,685.09 is: 931,027.88
Step by Step Solution
- Step 1: Write the proportion equation
1,379,730.21 : 2,069,595.87 = 620,685.09 : x - Step 2: Convert to fraction form
1,379,730.21/2,069,595.87 = 620,685.09/x - Step 3: Cross multiply
1,379,730.21x = 2,069,595.87 × 620,685.09 - Step 4: Simplify right side
1,379,730.21x = 1,284,567,298,834.58 - Step 5: Solve for x
x = 1,284,567,298,834.58/1,379,730.21 - Step 6: Final answer
x = 931,027.88
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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.