Finding the Fourth Proportional to 1,512,378.15, 2,087,228.93 and 1,129,740.63
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Solution
The fourth proportional to 1,512,378.15, 2,087,228.93 and 1,129,740.63 is: 1,559,151.94
Step by Step Solution
- Step 1: Write the proportion equation
1,512,378.15 : 2,087,228.93 = 1,129,740.63 : x - Step 2: Convert to fraction form
1,512,378.15/2,087,228.93 = 1,129,740.63/x - Step 3: Cross multiply
1,512,378.15x = 2,087,228.93 × 1,129,740.63 - Step 4: Simplify right side
1,512,378.15x = 2,358,027,320,683.72 - Step 5: Solve for x
x = 2,358,027,320,683.72/1,512,378.15 - Step 6: Final answer
x = 1,559,151.94
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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.