Finding the Fourth Proportional to 7,217,040.87, 9,959,512.95 and 4,316,431.68
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Solution
The fourth proportional to 7,217,040.87, 9,959,512.95 and 4,316,431.68 is: 5,956,673.65
Step by Step Solution
- Step 1: Write the proportion equation
7,217,040.87 : 9,959,512.95 = 4,316,431.68 : x - Step 2: Convert to fraction form
7,217,040.87/9,959,512.95 = 4,316,431.68/x - Step 3: Cross multiply
7,217,040.87x = 9,959,512.95 × 4,316,431.68 - Step 4: Simplify right side
7,217,040.87x = 42,989,557,214,750.25 - Step 5: Solve for x
x = 42,989,557,214,750.25/7,217,040.87 - Step 6: Final answer
x = 5,956,673.65
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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.