Finding the Fourth Proportional to 643,465.26, 887,981.71 and 353,078.73
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Solution
The fourth proportional to 643,465.26, 887,981.71 and 353,078.73 is: 487,248.45
Step by Step Solution
- Step 1: Write the proportion equation
643,465.26 : 887,981.71 = 353,078.73 : x - Step 2: Convert to fraction form
643,465.26/887,981.71 = 353,078.73/x - Step 3: Cross multiply
643,465.26x = 887,981.71 × 353,078.73 - Step 4: Simplify right side
643,465.26x = 313,527,448,224.73 - Step 5: Solve for x
x = 313,527,448,224.73/643,465.26 - Step 6: Final answer
x = 487,248.45
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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.