Finding the Fourth Proportional to 812,163.76, 1,217,835.56 and 475,305.62
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Solution
The fourth proportional to 812,163.76, 1,217,835.56 and 475,305.62 is: 712,718.43
Step by Step Solution
- Step 1: Write the proportion equation
812,163.76 : 1,217,835.56 = 475,305.62 : x - Step 2: Convert to fraction form
812,163.76/1,217,835.56 = 475,305.62/x - Step 3: Cross multiply
812,163.76x = 1,217,835.56 × 475,305.62 - Step 4: Simplify right side
812,163.76x = 578,844,081,002.93 - Step 5: Solve for x
x = 578,844,081,002.93/812,163.76 - Step 6: Final answer
x = 712,718.43
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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.