Finding the Fourth Proportional to 2,130,659.70, 2,940,290.91 and 1,163,789.70
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Solution
The fourth proportional to 2,130,659.70, 2,940,290.91 and 1,163,789.70 is: 1,606,019.15
Step by Step Solution
- Step 1: Write the proportion equation
2,130,659.70 : 2,940,290.91 = 1,163,789.70 : x - Step 2: Convert to fraction form
2,130,659.70/2,940,290.91 = 1,163,789.70/x - Step 3: Cross multiply
2,130,659.70x = 2,940,290.91 × 1,163,789.70 - Step 4: Simplify right side
2,130,659.70x = 3,421,880,276,061.63 - Step 5: Solve for x
x = 3,421,880,276,061.63/2,130,659.70 - Step 6: Final answer
x = 1,606,019.15
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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.