Finding the Fourth Proportional to 5,390,718.80, 7,438,978.96 and 2,943,432.84
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Solution
The fourth proportional to 5,390,718.80, 7,438,978.96 and 2,943,432.84 is: 4,061,821.03
Step by Step Solution
- Step 1: Write the proportion equation
5,390,718.80 : 7,438,978.96 = 2,943,432.84 : x - Step 2: Convert to fraction form
5,390,718.80/7,438,978.96 = 2,943,432.84/x - Step 3: Cross multiply
5,390,718.80x = 7,438,978.96 × 2,943,432.84 - Step 4: Simplify right side
5,390,718.80x = 21,896,134,966,933.05 - Step 5: Solve for x
x = 21,896,134,966,933.05/5,390,718.80 - Step 6: Final answer
x = 4,061,821.03
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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.