Finding the Fourth Proportional to 718,749.60, 991,881.36 and 396,473.28
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Solution
The fourth proportional to 718,749.60, 991,881.36 and 396,473.28 is: 547,136.94
Step by Step Solution
- Step 1: Write the proportion equation
718,749.60 : 991,881.36 = 396,473.28 : x - Step 2: Convert to fraction form
718,749.60/991,881.36 = 396,473.28/x - Step 3: Cross multiply
718,749.60x = 991,881.36 × 396,473.28 - Step 4: Simplify right side
718,749.60x = 393,254,456,170.06 - Step 5: Solve for x
x = 393,254,456,170.06/718,749.60 - Step 6: Final answer
x = 547,136.94
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.