Finding the Fourth Proportional to 985,655.70, 1,478,532.15 and 513,263.70
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Solution
The fourth proportional to 985,655.70, 1,478,532.15 and 513,263.70 is: 769,920.86
Step by Step Solution
- Step 1: Write the proportion equation
985,655.70 : 1,478,532.15 = 513,263.70 : x - Step 2: Convert to fraction form
985,655.70/1,478,532.15 = 513,263.70/x - Step 3: Cross multiply
985,655.70x = 1,478,532.15 × 513,263.70 - Step 4: Simplify right side
985,655.70x = 758,876,881,877.96 - Step 5: Solve for x
x = 758,876,881,877.96/985,655.70 - Step 6: Final answer
x = 769,920.86
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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.