Finding the Fourth Proportional to 1,290,542.84, 1,780,938.08 and 717,578
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Solution
The fourth proportional to 1,290,542.84, 1,780,938.08 and 717,578 is: 990,251.50
Step by Step Solution
- Step 1: Write the proportion equation
1,290,542.84 : 1,780,938.08 = 717,578 : x - Step 2: Convert to fraction form
1,290,542.84/1,780,938.08 = 717,578/x - Step 3: Cross multiply
1,290,542.84x = 1,780,938.08 × 717,578 - Step 4: Simplify right side
1,290,542.84x = 1,277,961,985,570.24 - Step 5: Solve for x
x = 1,277,961,985,570.24/1,290,542.84 - Step 6: Final answer
x = 990,251.50
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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.