Finding the Fourth Proportional to 1,420,122.90, 1,959,776.80 and 775,543.08
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Solution
The fourth proportional to 1,420,122.90, 1,959,776.80 and 775,543.08 is: 1,070,253.37
Step by Step Solution
- Step 1: Write the proportion equation
1,420,122.90 : 1,959,776.80 = 775,543.08 : x - Step 2: Convert to fraction form
1,420,122.90/1,959,776.80 = 775,543.08/x - Step 3: Cross multiply
1,420,122.90x = 1,959,776.80 × 775,543.08 - Step 4: Simplify right side
1,420,122.90x = 1,519,891,321,907.94 - Step 5: Solve for x
x = 1,519,891,321,907.94/1,420,122.90 - Step 6: Final answer
x = 1,070,253.37
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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.