Finding the Fourth Proportional to 1,171,545.12, 1,755,311.28 and 639,439.68
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Solution
The fourth proportional to 1,171,545.12, 1,755,311.28 and 639,439.68 is: 958,064.41
Step by Step Solution
- Step 1: Write the proportion equation
1,171,545.12 : 1,755,311.28 = 639,439.68 : x - Step 2: Convert to fraction form
1,171,545.12/1,755,311.28 = 639,439.68/x - Step 3: Cross multiply
1,171,545.12x = 1,755,311.28 × 639,439.68 - Step 4: Simplify right side
1,171,545.12x = 1,122,415,683,183.59 - Step 5: Solve for x
x = 1,122,415,683,183.59/1,171,545.12 - Step 6: Final answer
x = 958,064.41
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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.