Finding the Fourth Proportional to 790,138.31, 1,090,393.76 and 427,562.18
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Solution
The fourth proportional to 790,138.31, 1,090,393.76 and 427,562.18 is: 590,037.37
Step by Step Solution
- Step 1: Write the proportion equation
790,138.31 : 1,090,393.76 = 427,562.18 : x - Step 2: Convert to fraction form
790,138.31/1,090,393.76 = 427,562.18/x - Step 3: Cross multiply
790,138.31x = 1,090,393.76 × 427,562.18 - Step 4: Simplify right side
790,138.31x = 466,211,128,700.93 - Step 5: Solve for x
x = 466,211,128,700.93/790,138.31 - Step 6: Final answer
x = 590,037.37
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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.