Finding the Fourth Proportional to 990,024.84, 1,485,661.99 and 421,405.02
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Solution
The fourth proportional to 990,024.84, 1,485,661.99 and 421,405.02 is: 632,373.45
Step by Step Solution
- Step 1: Write the proportion equation
990,024.84 : 1,485,661.99 = 421,405.02 : x - Step 2: Convert to fraction form
990,024.84/1,485,661.99 = 421,405.02/x - Step 3: Cross multiply
990,024.84x = 1,485,661.99 × 421,405.02 - Step 4: Simplify right side
990,024.84x = 626,065,419,555.68 - Step 5: Solve for x
x = 626,065,419,555.68/990,024.84 - Step 6: Final answer
x = 632,373.45
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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.