Finding the Fourth Proportional to 7,828,828.20, 11,739,400.32 and 3,216,978.99
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Solution
The fourth proportional to 7,828,828.20, 11,739,400.32 and 3,216,978.99 is: 4,823,889.76
Step by Step Solution
- Step 1: Write the proportion equation
7,828,828.20 : 11,739,400.32 = 3,216,978.99 : x - Step 2: Convert to fraction form
7,828,828.20/11,739,400.32 = 3,216,978.99/x - Step 3: Cross multiply
7,828,828.20x = 11,739,400.32 × 3,216,978.99 - Step 4: Simplify right side
7,828,828.20x = 37,765,404,184,639.28 - Step 5: Solve for x
x = 37,765,404,184,639.28/7,828,828.20 - Step 6: Final answer
x = 4,823,889.76
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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.