Finding the Fourth Proportional to 3,128,321.28, 4,317,068.16 and 1,697,537.28
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Solution
The fourth proportional to 3,128,321.28, 4,317,068.16 and 1,697,537.28 is: 2,342,593.19
Step by Step Solution
- Step 1: Write the proportion equation
3,128,321.28 : 4,317,068.16 = 1,697,537.28 : x - Step 2: Convert to fraction form
3,128,321.28/4,317,068.16 = 1,697,537.28/x - Step 3: Cross multiply
3,128,321.28x = 4,317,068.16 × 1,697,537.28 - Step 4: Simplify right side
3,128,321.28x = 7,328,384,141,901.01 - Step 5: Solve for x
x = 7,328,384,141,901.01/3,128,321.28 - Step 6: Final answer
x = 2,342,593.19
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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.