Finding the Fourth Proportional to 2,115,580.21, 2,918,779.72 and 1,352,074.21
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Solution
The fourth proportional to 2,115,580.21, 2,918,779.72 and 1,352,074.21 is: 1,865,401.64
Step by Step Solution
- Step 1: Write the proportion equation
2,115,580.21 : 2,918,779.72 = 1,352,074.21 : x - Step 2: Convert to fraction form
2,115,580.21/2,918,779.72 = 1,352,074.21/x - Step 3: Cross multiply
2,115,580.21x = 2,918,779.72 × 1,352,074.21 - Step 4: Simplify right side
2,115,580.21x = 3,946,406,784,083.02 - Step 5: Solve for x
x = 3,946,406,784,083.02/2,115,580.21 - Step 6: Final answer
x = 1,865,401.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.