Finding the Fourth Proportional to 457,911.19, 686,899.58 and 120,948.48
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Solution
The fourth proportional to 457,911.19, 686,899.58 and 120,948.48 is: 181,431.38
Step by Step Solution
- Step 1: Write the proportion equation
457,911.19 : 686,899.58 = 120,948.48 : x - Step 2: Convert to fraction form
457,911.19/686,899.58 = 120,948.48/x - Step 3: Cross multiply
457,911.19x = 686,899.58 × 120,948.48 - Step 4: Simplify right side
457,911.19x = 83,079,459,508.90 - Step 5: Solve for x
x = 83,079,459,508.90/457,911.19 - Step 6: Final answer
x = 181,431.38
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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.