Finding the Fourth Proportional to 683,947.19, 943,895.94 and 378,016.99
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Solution
The fourth proportional to 683,947.19, 943,895.94 and 378,016.99 is: 521,690.43
Step by Step Solution
- Step 1: Write the proportion equation
683,947.19 : 943,895.94 = 378,016.99 : x - Step 2: Convert to fraction form
683,947.19/943,895.94 = 378,016.99/x - Step 3: Cross multiply
683,947.19x = 943,895.94 × 378,016.99 - Step 4: Simplify right side
683,947.19x = 356,808,702,112.02 - Step 5: Solve for x
x = 356,808,702,112.02/683,947.19 - Step 6: Final answer
x = 521,690.43
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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.