Finding the Fourth Proportional to 918,645.79, 1,377,879.58 and 278,955.07
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Solution
The fourth proportional to 918,645.79, 1,377,879.58 and 278,955.07 is: 418,405.55
Step by Step Solution
- Step 1: Write the proportion equation
918,645.79 : 1,377,879.58 = 278,955.07 : x - Step 2: Convert to fraction form
918,645.79/1,377,879.58 = 278,955.07/x - Step 3: Cross multiply
918,645.79x = 1,377,879.58 × 278,955.07 - Step 4: Simplify right side
918,645.79x = 384,366,494,690.47 - Step 5: Solve for x
x = 384,366,494,690.47/918,645.79 - Step 6: Final answer
x = 418,405.55
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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.