Finding the Fourth Proportional to 1,391,387.63, 2,087,343.80 and 527,081.28
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Solution
The fourth proportional to 1,391,387.63, 2,087,343.80 and 527,081.28 is: 790,721.30
Step by Step Solution
- Step 1: Write the proportion equation
1,391,387.63 : 2,087,343.80 = 527,081.28 : x - Step 2: Convert to fraction form
1,391,387.63/2,087,343.80 = 527,081.28/x - Step 3: Cross multiply
1,391,387.63x = 2,087,343.80 × 527,081.28 - Step 4: Simplify right side
1,391,387.63x = 1,100,199,834,900.09 - Step 5: Solve for x
x = 1,100,199,834,900.09/1,391,387.63 - Step 6: Final answer
x = 790,721.30
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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.