Finding the Fourth Proportional to 7,772,603.40, 11,658,905.10 and 6,953,790.60
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Solution
The fourth proportional to 7,772,603.40, 11,658,905.10 and 6,953,790.60 is: 10,430,685.90
Step by Step Solution
- Step 1: Write the proportion equation
7,772,603.40 : 11,658,905.10 = 6,953,790.60 : x - Step 2: Convert to fraction form
7,772,603.40/11,658,905.10 = 6,953,790.60/x - Step 3: Cross multiply
7,772,603.40x = 11,658,905.10 × 6,953,790.60 - Step 4: Simplify right side
7,772,603.40x = 81,073,584,690,672.05 - Step 5: Solve for x
x = 81,073,584,690,672.05/7,772,603.40 - Step 6: Final answer
x = 10,430,685.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.