Finding the Fourth Proportional to 990,049.97, 1,485,699.71 and 421,430.17
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Solution
The fourth proportional to 990,049.97, 1,485,699.71 and 421,430.17 is: 632,411.19
Step by Step Solution
- Step 1: Write the proportion equation
990,049.97 : 1,485,699.71 = 421,430.17 : x - Step 2: Convert to fraction form
990,049.97/1,485,699.71 = 421,430.17/x - Step 3: Cross multiply
990,049.97x = 1,485,699.71 × 421,430.17 - Step 4: Simplify right side
990,049.97x = 626,118,681,354.25 - Step 5: Solve for x
x = 626,118,681,354.25/990,049.97 - Step 6: Final answer
x = 632,411.19
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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.