Finding the Fourth Proportional to 539,146.80, 743,781.84 and 312,660.96
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Solution
The fourth proportional to 539,146.80, 743,781.84 and 312,660.96 is: 431,332.51
Step by Step Solution
- Step 1: Write the proportion equation
539,146.80 : 743,781.84 = 312,660.96 : x - Step 2: Convert to fraction form
539,146.80/743,781.84 = 312,660.96/x - Step 3: Cross multiply
539,146.80x = 743,781.84 × 312,660.96 - Step 4: Simplify right side
539,146.80x = 232,551,544,124.97 - Step 5: Solve for x
x = 232,551,544,124.97/539,146.80 - Step 6: Final answer
x = 431,332.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.