Finding the Fourth Proportional to 753,890.17, 1,040,376.51 and 409,726.09
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Solution
The fourth proportional to 753,890.17, 1,040,376.51 and 409,726.09 is: 565,426.39
Step by Step Solution
- Step 1: Write the proportion equation
753,890.17 : 1,040,376.51 = 409,726.09 : x - Step 2: Convert to fraction form
753,890.17/1,040,376.51 = 409,726.09/x - Step 3: Cross multiply
753,890.17x = 1,040,376.51 × 409,726.09 - Step 4: Simplify right side
753,890.17x = 426,269,399,570.15 - Step 5: Solve for x
x = 426,269,399,570.15/753,890.17 - Step 6: Final answer
x = 565,426.39
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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.