Finding the Fourth Proportional to 478,471.98, 717,684.12 and 178,930.54
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Solution
The fourth proportional to 478,471.98, 717,684.12 and 178,930.54 is: 268,386.89
Step by Step Solution
- Step 1: Write the proportion equation
478,471.98 : 717,684.12 = 178,930.54 : x - Step 2: Convert to fraction form
478,471.98/717,684.12 = 178,930.54/x - Step 3: Cross multiply
478,471.98x = 717,684.12 × 178,930.54 - Step 4: Simplify right side
478,471.98x = 128,415,608,038.13 - Step 5: Solve for x
x = 128,415,608,038.13/478,471.98 - Step 6: Final answer
x = 268,386.89
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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.