Finding the Fourth Proportional to 918,115.20, 1,375,828.20 and 823,345.20
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Solution
The fourth proportional to 918,115.20, 1,375,828.20 and 823,345.20 is: 1,233,811.99
Step by Step Solution
- Step 1: Write the proportion equation
918,115.20 : 1,375,828.20 = 823,345.20 : x - Step 2: Convert to fraction form
918,115.20/1,375,828.20 = 823,345.20/x - Step 3: Cross multiply
918,115.20x = 1,375,828.20 × 823,345.20 - Step 4: Simplify right side
918,115.20x = 1,132,781,544,494.64 - Step 5: Solve for x
x = 1,132,781,544,494.64/918,115.20 - Step 6: Final answer
x = 1,233,811.99
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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.