Finding the Fourth Proportional to 1,387,696.71, 2,081,740.74 and 428,230.41
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Solution
The fourth proportional to 1,387,696.71, 2,081,740.74 and 428,230.41 is: 642,406.00
Step by Step Solution
- Step 1: Write the proportion equation
1,387,696.71 : 2,081,740.74 = 428,230.41 : x - Step 2: Convert to fraction form
1,387,696.71/2,081,740.74 = 428,230.41/x - Step 3: Cross multiply
1,387,696.71x = 2,081,740.74 × 428,230.41 - Step 4: Simplify right side
1,387,696.71x = 891,464,690,603.90 - Step 5: Solve for x
x = 891,464,690,603.90/1,387,696.71 - Step 6: Final answer
x = 642,406.00
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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.