Finding the Fourth Proportional to 7,780,461.05, 11,671,252.09 and 2,988,150.32
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Solution
The fourth proportional to 7,780,461.05, 11,671,252.09 and 2,988,150.32 is: 4,482,440.75
Step by Step Solution
- Step 1: Write the proportion equation
7,780,461.05 : 11,671,252.09 = 2,988,150.32 : x - Step 2: Convert to fraction form
7,780,461.05/11,671,252.09 = 2,988,150.32/x - Step 3: Cross multiply
7,780,461.05x = 11,671,252.09 × 2,988,150.32 - Step 4: Simplify right side
7,780,461.05x = 34,875,455,689,241.92 - Step 5: Solve for x
x = 34,875,455,689,241.92/7,780,461.05 - Step 6: Final answer
x = 4,482,440.75
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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.