Finding the Fourth Proportional to 817,693.58, 1,128,405.64 and 455,117.54
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Solution
The fourth proportional to 817,693.58, 1,128,405.64 and 455,117.54 is: 628,055.80
Step by Step Solution
- Step 1: Write the proportion equation
817,693.58 : 1,128,405.64 = 455,117.54 : x - Step 2: Convert to fraction form
817,693.58/1,128,405.64 = 455,117.54/x - Step 3: Cross multiply
817,693.58x = 1,128,405.64 × 455,117.54 - Step 4: Simplify right side
817,693.58x = 513,557,198,998.93 - Step 5: Solve for x
x = 513,557,198,998.93/817,693.58 - Step 6: Final answer
x = 628,055.80
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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.