Finding the Fourth Proportional to 643,935.30, 888,586.29 and 357,432.84
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Solution
The fourth proportional to 643,935.30, 888,586.29 and 357,432.84 is: 493,232.66
Step by Step Solution
- Step 1: Write the proportion equation
643,935.30 : 888,586.29 = 357,432.84 : x - Step 2: Convert to fraction form
643,935.30/888,586.29 = 357,432.84/x - Step 3: Cross multiply
643,935.30x = 888,586.29 × 357,432.84 - Step 4: Simplify right side
643,935.30x = 317,609,921,219.76 - Step 5: Solve for x
x = 317,609,921,219.76/643,935.30 - Step 6: Final answer
x = 493,232.66
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1.5x scale
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.