Finding the Fourth Proportional to 420,998.96, 630,954.12 and 314,986.16
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Solution
The fourth proportional to 420,998.96, 630,954.12 and 314,986.16 is: 472,071.99
Step by Step Solution
- Step 1: Write the proportion equation
420,998.96 : 630,954.12 = 314,986.16 : x - Step 2: Convert to fraction form
420,998.96/630,954.12 = 314,986.16/x - Step 3: Cross multiply
420,998.96x = 630,954.12 × 314,986.16 - Step 4: Simplify right side
420,998.96x = 198,741,815,394.98 - Step 5: Solve for x
x = 198,741,815,394.98/420,998.96 - Step 6: Final answer
x = 472,071.99
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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.