Finding the Fourth Proportional to 478,471.36, 717,683.18 and 178,929.92
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Solution
The fourth proportional to 478,471.36, 717,683.18 and 178,929.92 is: 268,385.95
Step by Step Solution
- Step 1: Write the proportion equation
478,471.36 : 717,683.18 = 178,929.92 : x - Step 2: Convert to fraction form
478,471.36/717,683.18 = 178,929.92/x - Step 3: Cross multiply
478,471.36x = 717,683.18 × 178,929.92 - Step 4: Simplify right side
478,471.36x = 128,414,990,394.33 - Step 5: Solve for x
x = 128,414,990,394.33/478,471.36 - Step 6: Final answer
x = 268,385.95
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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.