Finding the Fourth Proportional to 817,728.66, 1,128,456.93 and 455,146.74
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Solution
The fourth proportional to 817,728.66, 1,128,456.93 and 455,146.74 is: 628,097.70
Step by Step Solution
- Step 1: Write the proportion equation
817,728.66 : 1,128,456.93 = 455,146.74 : x - Step 2: Convert to fraction form
817,728.66/1,128,456.93 = 455,146.74/x - Step 3: Cross multiply
817,728.66x = 1,128,456.93 × 455,146.74 - Step 4: Simplify right side
817,728.66x = 513,613,492,919.91 - Step 5: Solve for x
x = 513,613,492,919.91/817,728.66 - Step 6: Final answer
x = 628,097.70
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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.