Finding the Fourth Proportional to 817,573.16, 1,128,242.18 and 454,990.91
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Solution
The fourth proportional to 817,573.16, 1,128,242.18 and 454,990.91 is: 627,882.56
Step by Step Solution
- Step 1: Write the proportion equation
817,573.16 : 1,128,242.18 = 454,990.91 : x - Step 2: Convert to fraction form
817,573.16/1,128,242.18 = 454,990.91/x - Step 3: Cross multiply
817,573.16x = 1,128,242.18 × 454,990.91 - Step 4: Simplify right side
817,573.16x = 513,339,931,674.85 - Step 5: Solve for x
x = 513,339,931,674.85/817,573.16 - Step 6: Final answer
x = 627,882.56
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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.