Finding the Fourth Proportional to 812,156.88, 1,212,422.64 and 705,897.84
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Solution
The fourth proportional to 812,156.88, 1,212,422.64 and 705,897.84 is: 1,053,794.59
Step by Step Solution
- Step 1: Write the proportion equation
812,156.88 : 1,212,422.64 = 705,897.84 : x - Step 2: Convert to fraction form
812,156.88/1,212,422.64 = 705,897.84/x - Step 3: Cross multiply
812,156.88x = 1,212,422.64 × 705,897.84 - Step 4: Simplify right side
812,156.88x = 855,846,522,743.10 - Step 5: Solve for x
x = 855,846,522,743.10/812,156.88 - Step 6: Final answer
x = 1,053,794.59
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.