Finding the Fourth Proportional to 817,825.41, 1,128,632.13 and 455,226.21
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Solution
The fourth proportional to 817,825.41, 1,128,632.13 and 455,226.21 is: 628,230.57
Step by Step Solution
- Step 1: Write the proportion equation
817,825.41 : 1,128,632.13 = 455,226.21 : x - Step 2: Convert to fraction form
817,825.41/1,128,632.13 = 455,226.21/x - Step 3: Cross multiply
817,825.41x = 1,128,632.13 × 455,226.21 - Step 4: Simplify right side
817,825.41x = 513,782,927,024.13 - Step 5: Solve for x
x = 513,782,927,024.13/817,825.41 - Step 6: Final answer
x = 628,230.57
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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.