Finding the Fourth Proportional to 1,986,221.76, 2,977,265.77 and 920,387.31
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Solution
The fourth proportional to 1,986,221.76, 2,977,265.77 and 920,387.31 is: 1,379,623.20
Step by Step Solution
- Step 1: Write the proportion equation
1,986,221.76 : 2,977,265.77 = 920,387.31 : x - Step 2: Convert to fraction form
1,986,221.76/2,977,265.77 = 920,387.31/x - Step 3: Cross multiply
1,986,221.76x = 2,977,265.77 × 920,387.31 - Step 4: Simplify right side
1,986,221.76x = 2,740,237,619,739.66 - Step 5: Solve for x
x = 2,740,237,619,739.66/1,986,221.76 - Step 6: Final answer
x = 1,379,623.20
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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.