Finding the Fourth Proportional to 989,122.53, 1,481,376.51 and 722,221.05
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Solution
The fourth proportional to 989,122.53, 1,481,376.51 and 722,221.05 is: 1,081,646.88
Step by Step Solution
- Step 1: Write the proportion equation
989,122.53 : 1,481,376.51 = 722,221.05 : x - Step 2: Convert to fraction form
989,122.53/1,481,376.51 = 722,221.05/x - Step 3: Cross multiply
989,122.53x = 1,481,376.51 × 722,221.05 - Step 4: Simplify right side
989,122.53x = 1,069,881,298,497.54 - Step 5: Solve for x
x = 1,069,881,298,497.54/989,122.53 - Step 6: Final answer
x = 1,081,646.88
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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.