Finding the Fourth Proportional to 1,663,536.20, 2,490,638.70 and 1,616,880.20
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Solution
The fourth proportional to 1,663,536.20, 2,490,638.70 and 1,616,880.20 is: 2,420,785.55
Step by Step Solution
- Step 1: Write the proportion equation
1,663,536.20 : 2,490,638.70 = 1,616,880.20 : x - Step 2: Convert to fraction form
1,663,536.20/2,490,638.70 = 1,616,880.20/x - Step 3: Cross multiply
1,663,536.20x = 2,490,638.70 × 1,616,880.20 - Step 4: Simplify right side
1,663,536.20x = 4,027,064,399,383.74 - Step 5: Solve for x
x = 4,027,064,399,383.74/1,663,536.20 - Step 6: Final answer
x = 2,420,785.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.