Finding the Fourth Proportional to 7,881,353.20, 11,822,029.80 and 3,087,449.20
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Solution
The fourth proportional to 7,881,353.20, 11,822,029.80 and 3,087,449.20 is: 4,631,173.80
Step by Step Solution
- Step 1: Write the proportion equation
7,881,353.20 : 11,822,029.80 = 3,087,449.20 : x - Step 2: Convert to fraction form
7,881,353.20/11,822,029.80 = 3,087,449.20/x - Step 3: Cross multiply
7,881,353.20x = 11,822,029.80 × 3,087,449.20 - Step 4: Simplify right side
7,881,353.20x = 36,499,916,448,386.16 - Step 5: Solve for x
x = 36,499,916,448,386.16/7,881,353.20 - Step 6: Final answer
x = 4,631,173.80
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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.