Finding the Fourth Proportional to 1,129,378.87, 1,558,545.51 and 620,114.05
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Solution
The fourth proportional to 1,129,378.87, 1,558,545.51 and 620,114.05 is: 855,758.85
Step by Step Solution
- Step 1: Write the proportion equation
1,129,378.87 : 1,558,545.51 = 620,114.05 : x - Step 2: Convert to fraction form
1,129,378.87/1,558,545.51 = 620,114.05/x - Step 3: Cross multiply
1,129,378.87x = 1,558,545.51 × 620,114.05 - Step 4: Simplify right side
1,129,378.87x = 966,475,968,315.42 - Step 5: Solve for x
x = 966,475,968,315.42/1,129,378.87 - Step 6: Final answer
x = 855,758.85
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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.