Finding the Fourth Proportional to 817,789.41, 1,128,586.59 and 455,236.26
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Solution
The fourth proportional to 817,789.41, 1,128,586.59 and 455,236.26 is: 628,246.75
Step by Step Solution
- Step 1: Write the proportion equation
817,789.41 : 1,128,586.59 = 455,236.26 : x - Step 2: Convert to fraction form
817,789.41/1,128,586.59 = 455,236.26/x - Step 3: Cross multiply
817,789.41x = 1,128,586.59 × 455,236.26 - Step 4: Simplify right side
817,789.41x = 513,773,538,317.75 - Step 5: Solve for x
x = 513,773,538,317.75/817,789.41 - Step 6: Final answer
x = 628,246.75
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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.