Finding the Fourth Proportional to 989,251.20, 1,484,265.60 and 390,110.40
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Solution
The fourth proportional to 989,251.20, 1,484,265.60 and 390,110.40 is: 585,318.92
Step by Step Solution
- Step 1: Write the proportion equation
989,251.20 : 1,484,265.60 = 390,110.40 : x - Step 2: Convert to fraction form
989,251.20/1,484,265.60 = 390,110.40/x - Step 3: Cross multiply
989,251.20x = 1,484,265.60 × 390,110.40 - Step 4: Simplify right side
989,251.20x = 579,027,446,922.24 - Step 5: Solve for x
x = 579,027,446,922.24/989,251.20 - Step 6: Final answer
x = 585,318.92
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.