Finding the Fourth Proportional to 806,398.68, 1,112,830.28 and 438,877.20
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Solution
The fourth proportional to 806,398.68, 1,112,830.28 and 438,877.20 is: 605,650.59
Step by Step Solution
- Step 1: Write the proportion equation
806,398.68 : 1,112,830.28 = 438,877.20 : x - Step 2: Convert to fraction form
806,398.68/1,112,830.28 = 438,877.20/x - Step 3: Cross multiply
806,398.68x = 1,112,830.28 × 438,877.20 - Step 4: Simplify right side
806,398.68x = 488,395,837,361.62 - Step 5: Solve for x
x = 488,395,837,361.62/806,398.68 - Step 6: Final answer
x = 605,650.59
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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.