Finding the Fourth Proportional to 678,317.36, 1,017,476.06 and 257,593.23
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Solution
The fourth proportional to 678,317.36, 1,017,476.06 and 257,593.23 is: 386,389.85
Step by Step Solution
- Step 1: Write the proportion equation
678,317.36 : 1,017,476.06 = 257,593.23 : x - Step 2: Convert to fraction form
678,317.36/1,017,476.06 = 257,593.23/x - Step 3: Cross multiply
678,317.36x = 1,017,476.06 × 257,593.23 - Step 4: Simplify right side
678,317.36x = 262,094,943,455.11 - Step 5: Solve for x
x = 262,094,943,455.11/678,317.36 - Step 6: Final answer
x = 386,389.85
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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.