Finding the Fourth Proportional to 989,860.20, 1,484,790.30 and 691,261.80
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Solution
The fourth proportional to 989,860.20, 1,484,790.30 and 691,261.80 is: 1,036,892.70
Step by Step Solution
- Step 1: Write the proportion equation
989,860.20 : 1,484,790.30 = 691,261.80 : x - Step 2: Convert to fraction form
989,860.20/1,484,790.30 = 691,261.80/x - Step 3: Cross multiply
989,860.20x = 1,484,790.30 × 691,261.80 - Step 4: Simplify right side
989,860.20x = 1,026,378,815,400.54 - Step 5: Solve for x
x = 1,026,378,815,400.54/989,860.20 - Step 6: Final answer
x = 1,036,892.70
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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.