Finding the Fourth Proportional to 876,261.12, 1,209,427.68 and 553,765.44
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Solution
The fourth proportional to 876,261.12, 1,209,427.68 and 553,765.44 is: 764,314.70
Step by Step Solution
- Step 1: Write the proportion equation
876,261.12 : 1,209,427.68 = 553,765.44 : x - Step 2: Convert to fraction form
876,261.12/1,209,427.68 = 553,765.44/x - Step 3: Cross multiply
876,261.12x = 1,209,427.68 × 553,765.44 - Step 4: Simplify right side
876,261.12x = 669,739,251,363.38 - Step 5: Solve for x
x = 669,739,251,363.38/876,261.12 - Step 6: Final answer
x = 764,314.70
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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.