Finding the Fourth Proportional to 915,981.75, 1,264,055.36 and 558,285.75
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Solution
The fourth proportional to 915,981.75, 1,264,055.36 and 558,285.75 is: 770,434.66
Step by Step Solution
- Step 1: Write the proportion equation
915,981.75 : 1,264,055.36 = 558,285.75 : x - Step 2: Convert to fraction form
915,981.75/1,264,055.36 = 558,285.75/x - Step 3: Cross multiply
915,981.75x = 1,264,055.36 × 558,285.75 - Step 4: Simplify right side
915,981.75x = 705,704,091,907.69 - Step 5: Solve for x
x = 705,704,091,907.69/915,981.75 - Step 6: Final answer
x = 770,434.66
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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.