Finding the Fourth Proportional to 430,825.64, 645,276.17 and 312,224.63
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Solution
The fourth proportional to 430,825.64, 645,276.17 and 312,224.63 is: 467,639.56
Step by Step Solution
- Step 1: Write the proportion equation
430,825.64 : 645,276.17 = 312,224.63 : x - Step 2: Convert to fraction form
430,825.64/645,276.17 = 312,224.63/x - Step 3: Cross multiply
430,825.64x = 645,276.17 × 312,224.63 - Step 4: Simplify right side
430,825.64x = 201,471,110,980.25 - Step 5: Solve for x
x = 201,471,110,980.25/430,825.64 - Step 6: Final answer
x = 467,639.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.