Finding the Fourth Proportional to 691,965.50, 954,749.70 and 420,026.63
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Solution
The fourth proportional to 691,965.50, 954,749.70 and 420,026.63 is: 579,537.99
Step by Step Solution
- Step 1: Write the proportion equation
691,965.50 : 954,749.70 = 420,026.63 : x - Step 2: Convert to fraction form
691,965.50/954,749.70 = 420,026.63/x - Step 3: Cross multiply
691,965.50x = 954,749.70 × 420,026.63 - Step 4: Simplify right side
691,965.50x = 401,020,294,210.76 - Step 5: Solve for x
x = 401,020,294,210.76/691,965.50 - Step 6: Final answer
x = 579,537.99
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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.