Finding the Fourth Proportional to 818,406.12, 1,129,435.56 and 455,830.08
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Solution
The fourth proportional to 818,406.12, 1,129,435.56 and 455,830.08 is: 629,065.07
Step by Step Solution
- Step 1: Write the proportion equation
818,406.12 : 1,129,435.56 = 455,830.08 : x - Step 2: Convert to fraction form
818,406.12/1,129,435.56 = 455,830.08/x - Step 3: Cross multiply
818,406.12x = 1,129,435.56 × 455,830.08 - Step 4: Simplify right side
818,406.12x = 514,830,701,669.65 - Step 5: Solve for x
x = 514,830,701,669.65/818,406.12 - Step 6: Final answer
x = 629,065.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.