Finding the Fourth Proportional to 2,112,368.13, 2,915,068.80 and 1,145,498.17
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Solution
The fourth proportional to 2,112,368.13, 2,915,068.80 and 1,145,498.17 is: 1,580,787.90
Step by Step Solution
- Step 1: Write the proportion equation
2,112,368.13 : 2,915,068.80 = 1,145,498.17 : x - Step 2: Convert to fraction form
2,112,368.13/2,915,068.80 = 1,145,498.17/x - Step 3: Cross multiply
2,112,368.13x = 2,915,068.80 × 1,145,498.17 - Step 4: Simplify right side
2,112,368.13x = 3,339,205,975,824.10 - Step 5: Solve for x
x = 3,339,205,975,824.10/2,112,368.13 - Step 6: Final answer
x = 1,580,787.90
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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.