Finding the Fourth Proportional to 839,391.21, 1,158,356.25 and 457,417.98
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Solution
The fourth proportional to 839,391.21, 1,158,356.25 and 457,417.98 is: 631,234.84
Step by Step Solution
- Step 1: Write the proportion equation
839,391.21 : 1,158,356.25 = 457,417.98 : x - Step 2: Convert to fraction form
839,391.21/1,158,356.25 = 457,417.98/x - Step 3: Cross multiply
839,391.21x = 1,158,356.25 × 457,417.98 - Step 4: Simplify right side
839,391.21x = 529,852,975,995.38 - Step 5: Solve for x
x = 529,852,975,995.38/839,391.21 - Step 6: Final answer
x = 631,234.84
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1.5x scale
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.