Finding the Fourth Proportional to 3,900,307.95, 5,382,394.11 and 2,181,427.20
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Solution
The fourth proportional to 3,900,307.95, 5,382,394.11 and 2,181,427.20 is: 3,010,352.28
Step by Step Solution
- Step 1: Write the proportion equation
3,900,307.95 : 5,382,394.11 = 2,181,427.20 : x - Step 2: Convert to fraction form
3,900,307.95/5,382,394.11 = 2,181,427.20/x - Step 3: Cross multiply
3,900,307.95x = 5,382,394.11 × 2,181,427.20 - Step 4: Simplify right side
3,900,307.95x = 11,741,300,912,673.79 - Step 5: Solve for x
x = 11,741,300,912,673.79/3,900,307.95 - Step 6: Final answer
x = 3,010,352.28
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1.5x scale
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.