Finding the Fourth Proportional to 817,857.85, 1,128,663.61 and 455,306.21
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Solution
The fourth proportional to 817,857.85, 1,128,663.61 and 455,306.21 is: 628,333.58
Step by Step Solution
- Step 1: Write the proportion equation
817,857.85 : 1,128,663.61 = 455,306.21 : x - Step 2: Convert to fraction form
817,857.85/1,128,663.61 = 455,306.21/x - Step 3: Cross multiply
817,857.85x = 1,128,663.61 × 455,306.21 - Step 4: Simplify right side
817,857.85x = 513,887,550,634.02 - Step 5: Solve for x
x = 513,887,550,634.02/817,857.85 - Step 6: Final answer
x = 628,333.58
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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.