Finding the Fourth Proportional to 9,215,432.91, 12,712,548.26 and 5,729,449.84
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Solution
The fourth proportional to 9,215,432.91, 12,712,548.26 and 5,729,449.84 is: 7,903,688.12
Step by Step Solution
- Step 1: Write the proportion equation
9,215,432.91 : 12,712,548.26 = 5,729,449.84 : x - Step 2: Convert to fraction form
9,215,432.91/12,712,548.26 = 5,729,449.84/x - Step 3: Cross multiply
9,215,432.91x = 12,712,548.26 × 5,729,449.84 - Step 4: Simplify right side
9,215,432.91x = 72,835,907,576,791.53 - Step 5: Solve for x
x = 72,835,907,576,791.53/9,215,432.91 - Step 6: Final answer
x = 7,903,688.12
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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.