Finding the Fourth Proportional to 2,130,651.20, 2,940,279.20 and 1,163,781.20
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Solution
The fourth proportional to 2,130,651.20, 2,940,279.20 and 1,163,781.20 is: 1,606,007.43
Step by Step Solution
- Step 1: Write the proportion equation
2,130,651.20 : 2,940,279.20 = 1,163,781.20 : x - Step 2: Convert to fraction form
2,130,651.20/2,940,279.20 = 1,163,781.20/x - Step 3: Cross multiply
2,130,651.20x = 2,940,279.20 × 1,163,781.20 - Step 4: Simplify right side
2,130,651.20x = 3,421,841,655,711.04 - Step 5: Solve for x
x = 3,421,841,655,711.04/2,130,651.20 - Step 6: Final answer
x = 1,606,007.43
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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.