Finding the Fourth Proportional to 1,290,135.88, 1,932,776.25 and 756,070.48
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Solution
The fourth proportional to 1,290,135.88, 1,932,776.25 and 756,070.48 is: 1,132,683.07
Step by Step Solution
- Step 1: Write the proportion equation
1,290,135.88 : 1,932,776.25 = 756,070.48 : x - Step 2: Convert to fraction form
1,290,135.88/1,932,776.25 = 756,070.48/x - Step 3: Cross multiply
1,290,135.88x = 1,932,776.25 × 756,070.48 - Step 4: Simplify right side
1,290,135.88x = 1,461,315,067,070.10 - Step 5: Solve for x
x = 1,461,315,067,070.10/1,290,135.88 - Step 6: Final answer
x = 1,132,683.07
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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.