Finding the Fourth Proportional to 817,645.63, 1,128,388.14 and 455,092.72
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Solution
The fourth proportional to 817,645.63, 1,128,388.14 and 455,092.72 is: 628,048.64
Step by Step Solution
- Step 1: Write the proportion equation
817,645.63 : 1,128,388.14 = 455,092.72 : x - Step 2: Convert to fraction form
817,645.63/1,128,388.14 = 455,092.72/x - Step 3: Cross multiply
817,645.63x = 1,128,388.14 × 455,092.72 - Step 4: Simplify right side
817,645.63x = 513,521,227,848.34 - Step 5: Solve for x
x = 513,521,227,848.34/817,645.63 - Step 6: Final answer
x = 628,048.64
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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.