Finding the Fourth Proportional to 7,188,302.16, 9,919,905.02 and 3,925,139.66
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Solution
The fourth proportional to 7,188,302.16, 9,919,905.02 and 3,925,139.66 is: 5,416,718.96
Step by Step Solution
- Step 1: Write the proportion equation
7,188,302.16 : 9,919,905.02 = 3,925,139.66 : x - Step 2: Convert to fraction form
7,188,302.16/9,919,905.02 = 3,925,139.66/x - Step 3: Cross multiply
7,188,302.16x = 9,919,905.02 × 3,925,139.66 - Step 4: Simplify right side
7,188,302.16x = 38,937,012,617,435.09 - Step 5: Solve for x
x = 38,937,012,617,435.09/7,188,302.16 - Step 6: Final answer
x = 5,416,718.96
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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.