Finding the Fourth Proportional to 1,189,134.21, 1,783,637.58 and 420,578.67
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Solution
The fourth proportional to 1,189,134.21, 1,783,637.58 and 420,578.67 is: 630,845.46
Step by Step Solution
- Step 1: Write the proportion equation
1,189,134.21 : 1,783,637.58 = 420,578.67 : x - Step 2: Convert to fraction form
1,189,134.21/1,783,637.58 = 420,578.67/x - Step 3: Cross multiply
1,189,134.21x = 1,783,637.58 × 420,578.67 - Step 4: Simplify right side
1,189,134.21x = 750,159,921,158.42 - Step 5: Solve for x
x = 750,159,921,158.42/1,189,134.21 - Step 6: Final answer
x = 630,845.46
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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.