Finding the Fourth Proportional to 1,689,440.15, 2,331,408.86 and 915,051.74
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Solution
The fourth proportional to 1,689,440.15, 2,331,408.86 and 915,051.74 is: 1,262,761.35
Step by Step Solution
- Step 1: Write the proportion equation
1,689,440.15 : 2,331,408.86 = 915,051.74 : x - Step 2: Convert to fraction form
1,689,440.15/2,331,408.86 = 915,051.74/x - Step 3: Cross multiply
1,689,440.15x = 2,331,408.86 × 915,051.74 - Step 4: Simplify right side
1,689,440.15x = 2,133,359,721,193.56 - Step 5: Solve for x
x = 2,133,359,721,193.56/1,689,440.15 - Step 6: Final answer
x = 1,262,761.35
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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.