Finding the Fourth Proportional to 642,688.37, 964,710.95 and 628,212.14
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Solution
The fourth proportional to 642,688.37, 964,710.95 and 628,212.14 is: 942,981.32
Step by Step Solution
- Step 1: Write the proportion equation
642,688.37 : 964,710.95 = 628,212.14 : x - Step 2: Convert to fraction form
642,688.37/964,710.95 = 628,212.14/x - Step 3: Cross multiply
642,688.37x = 964,710.95 × 628,212.14 - Step 4: Simplify right side
642,688.37x = 606,043,130,380.93 - Step 5: Solve for x
x = 606,043,130,380.93/642,688.37 - Step 6: Final answer
x = 942,981.32
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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.