Finding the Fourth Proportional to 917,840.80, 1,376,288.43 and 411,968.13
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Solution
The fourth proportional to 917,840.80, 1,376,288.43 and 411,968.13 is: 617,739.99
Step by Step Solution
- Step 1: Write the proportion equation
917,840.80 : 1,376,288.43 = 411,968.13 : x - Step 2: Convert to fraction form
917,840.80/1,376,288.43 = 411,968.13/x - Step 3: Cross multiply
917,840.80x = 1,376,288.43 × 411,968.13 - Step 4: Simplify right side
917,840.80x = 566,986,970,847.74 - Step 5: Solve for x
x = 566,986,970,847.74/917,840.80 - Step 6: Final answer
x = 617,739.99
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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.