Finding the Fourth Proportional to 2,912,974.78, 4,020,124.11 and 1,689,269.68
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Solution
The fourth proportional to 2,912,974.78, 4,020,124.11 and 1,689,269.68 is: 2,331,319.11
Step by Step Solution
- Step 1: Write the proportion equation
2,912,974.78 : 4,020,124.11 = 1,689,269.68 : x - Step 2: Convert to fraction form
2,912,974.78/4,020,124.11 = 1,689,269.68/x - Step 3: Cross multiply
2,912,974.78x = 4,020,124.11 × 1,689,269.68 - Step 4: Simplify right side
2,912,974.78x = 6,791,073,768,859.99 - Step 5: Solve for x
x = 6,791,073,768,859.99/2,912,974.78 - Step 6: Final answer
x = 2,331,319.11
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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.