Finding the Fourth Proportional to 7,738,896.21, 10,679,812.58 and 4,254,381.86
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Solution
The fourth proportional to 7,738,896.21, 10,679,812.58 and 4,254,381.86 is: 5,871,121.63
Step by Step Solution
- Step 1: Write the proportion equation
7,738,896.21 : 10,679,812.58 = 4,254,381.86 : x - Step 2: Convert to fraction form
7,738,896.21/10,679,812.58 = 4,254,381.86/x - Step 3: Cross multiply
7,738,896.21x = 10,679,812.58 × 4,254,381.86 - Step 4: Simplify right side
7,738,896.21x = 45,436,000,908,551.80 - Step 5: Solve for x
x = 45,436,000,908,551.80/7,738,896.21 - Step 6: Final answer
x = 5,871,121.63
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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.