Finding the Fourth Proportional to 7,877,249.40, 11,808,875.70 and 4,678,980.60
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Solution
The fourth proportional to 7,877,249.40, 11,808,875.70 and 4,678,980.60 is: 7,014,313.94
Step by Step Solution
- Step 1: Write the proportion equation
7,877,249.40 : 11,808,875.70 = 4,678,980.60 : x - Step 2: Convert to fraction form
7,877,249.40/11,808,875.70 = 4,678,980.60/x - Step 3: Cross multiply
7,877,249.40x = 11,808,875.70 × 4,678,980.60 - Step 4: Simplify right side
7,877,249.40x = 55,253,500,308,111.41 - Step 5: Solve for x
x = 55,253,500,308,111.41/7,877,249.40 - Step 6: Final answer
x = 7,014,313.94
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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.