Finding the Fourth Proportional to 7,211,552.18, 9,951,547.74 and 3,947,735.51
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Solution
The fourth proportional to 7,211,552.18, 9,951,547.74 and 3,947,735.51 is: 5,447,659.17
Step by Step Solution
- Step 1: Write the proportion equation
7,211,552.18 : 9,951,547.74 = 3,947,735.51 : x - Step 2: Convert to fraction form
7,211,552.18/9,951,547.74 = 3,947,735.51/x - Step 3: Cross multiply
7,211,552.18x = 9,951,547.74 × 3,947,735.51 - Step 4: Simplify right side
7,211,552.18x = 39,286,078,392,658.24 - Step 5: Solve for x
x = 39,286,078,392,658.24/7,211,552.18 - Step 6: Final answer
x = 5,447,659.17
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1.5x scale
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.