Finding the Fourth Proportional to 1,677,636.20, 2,315,164.26 and 913,689.12
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Solution
The fourth proportional to 1,677,636.20, 2,315,164.26 and 913,689.12 is: 1,260,905.31
Step by Step Solution
- Step 1: Write the proportion equation
1,677,636.20 : 2,315,164.26 = 913,689.12 : x - Step 2: Convert to fraction form
1,677,636.20/2,315,164.26 = 913,689.12/x - Step 3: Cross multiply
1,677,636.20x = 2,315,164.26 × 913,689.12 - Step 4: Simplify right side
1,677,636.20x = 2,115,340,395,374.85 - Step 5: Solve for x
x = 2,115,340,395,374.85/1,677,636.20 - Step 6: Final answer
x = 1,260,905.31
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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.