Finding the Fourth Proportional to 1,290,369.35, 1,935,428.96 and 391,818.99
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Solution
The fourth proportional to 1,290,369.35, 1,935,428.96 and 391,818.99 is: 587,690.50
Step by Step Solution
- Step 1: Write the proportion equation
1,290,369.35 : 1,935,428.96 = 391,818.99 : x - Step 2: Convert to fraction form
1,290,369.35/1,935,428.96 = 391,818.99/x - Step 3: Cross multiply
1,290,369.35x = 1,935,428.96 × 391,818.99 - Step 4: Simplify right side
1,290,369.35x = 758,337,808,687.71 - Step 5: Solve for x
x = 758,337,808,687.71/1,290,369.35 - Step 6: Final answer
x = 587,690.50
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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.