Finding the Fourth Proportional to 698,189.09, 963,501.84 and 396,383.09
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Solution
The fourth proportional to 698,189.09, 963,501.84 and 396,383.09 is: 547,009.17
Step by Step Solution
- Step 1: Write the proportion equation
698,189.09 : 963,501.84 = 396,383.09 : x - Step 2: Convert to fraction form
698,189.09/963,501.84 = 396,383.09/x - Step 3: Cross multiply
698,189.09x = 963,501.84 × 396,383.09 - Step 4: Simplify right side
698,189.09x = 381,915,831,742.38 - Step 5: Solve for x
x = 381,915,831,742.38/698,189.09 - Step 6: Final answer
x = 547,009.17
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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.