Finding the Fourth Proportional to 426,719.79, 639,859.16 and 156,778.99
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Solution
The fourth proportional to 426,719.79, 639,859.16 and 156,778.99 is: 235,087.46
Step by Step Solution
- Step 1: Write the proportion equation
426,719.79 : 639,859.16 = 156,778.99 : x - Step 2: Convert to fraction form
426,719.79/639,859.16 = 156,778.99/x - Step 3: Cross multiply
426,719.79x = 639,859.16 × 156,778.99 - Step 4: Simplify right side
426,719.79x = 100,316,471,639.35 - Step 5: Solve for x
x = 100,316,471,639.35/426,719.79 - Step 6: Final answer
x = 235,087.46
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.