Finding the Fourth Proportional to 660,646.44, 990,619.74 and 261,271.08
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Solution
The fourth proportional to 660,646.44, 990,619.74 and 261,271.08 is: 391,768.23
Step by Step Solution
- Step 1: Write the proportion equation
660,646.44 : 990,619.74 = 261,271.08 : x - Step 2: Convert to fraction form
660,646.44/990,619.74 = 261,271.08/x - Step 3: Cross multiply
660,646.44x = 990,619.74 × 261,271.08 - Step 4: Simplify right side
660,646.44x = 258,820,289,339.12 - Step 5: Solve for x
x = 258,820,289,339.12/660,646.44 - Step 6: Final answer
x = 391,768.23
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.