Finding the Fourth Proportional to 809,984.12, 1,117,788.81 and 447,407.06
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Solution
The fourth proportional to 809,984.12, 1,117,788.81 and 447,407.06 is: 617,427.67
Step by Step Solution
- Step 1: Write the proportion equation
809,984.12 : 1,117,788.81 = 447,407.06 : x - Step 2: Convert to fraction form
809,984.12/1,117,788.81 = 447,407.06/x - Step 3: Cross multiply
809,984.12x = 1,117,788.81 × 447,407.06 - Step 4: Simplify right side
809,984.12x = 500,106,605,183.00 - Step 5: Solve for x
x = 500,106,605,183.00/809,984.12 - Step 6: Final answer
x = 617,427.67
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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.