Finding the Fourth Proportional to 509,723.70, 764,148.15 and 260,405.70
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Solution
The fourth proportional to 509,723.70, 764,148.15 and 260,405.70 is: 390,385.09
Step by Step Solution
- Step 1: Write the proportion equation
509,723.70 : 764,148.15 = 260,405.70 : x - Step 2: Convert to fraction form
509,723.70/764,148.15 = 260,405.70/x - Step 3: Cross multiply
509,723.70x = 764,148.15 × 260,405.70 - Step 4: Simplify right side
509,723.70x = 198,988,533,904.46 - Step 5: Solve for x
x = 198,988,533,904.46/509,723.70 - Step 6: Final answer
x = 390,385.09
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1.5x scale
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.