Finding the Fourth Proportional to 426,352,489.21, 639,589,739.42 and 131,272,575.92
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Solution
The fourth proportional to 426,352,489.21, 639,589,739.42 and 131,272,575.92 is: 196,927,647.31
Step by Step Solution
- Step 1: Write the proportion equation
426,352,489.21 : 639,589,739.42 = 131,272,575.92 : x - Step 2: Convert to fraction form
426,352,489.21/639,589,739.42 = 131,272,575.92/x - Step 3: Cross multiply
426,352,489.21x = 639,589,739.42 × 131,272,575.92 - Step 4: Simplify right side
426,352,489.21x = 83,960,592,625,193,664 - Step 5: Solve for x
x = 83,960,592,625,193,664/426,352,489.21 - Step 6: Final answer
x = 196,927,647.31
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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.