Finding the Fourth Proportional to 1,224,113.87, 1,689,169.69 and 680,215.21
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Solution
The fourth proportional to 1,224,113.87, 1,689,169.69 and 680,215.21 is: 938,637.28
Step by Step Solution
- Step 1: Write the proportion equation
1,224,113.87 : 1,689,169.69 = 680,215.21 : x - Step 2: Convert to fraction form
1,224,113.87/1,689,169.69 = 680,215.21/x - Step 3: Cross multiply
1,224,113.87x = 1,689,169.69 × 680,215.21 - Step 4: Simplify right side
1,224,113.87x = 1,148,998,915,408.98 - Step 5: Solve for x
x = 1,148,998,915,408.98/1,224,113.87 - Step 6: Final answer
x = 938,637.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.