Finding the Fourth Proportional to 792,415.84, 1,188,610.80 and 319,089.28
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Solution
The fourth proportional to 792,415.84, 1,188,610.80 and 319,089.28 is: 478,628.70
Step by Step Solution
- Step 1: Write the proportion equation
792,415.84 : 1,188,610.80 = 319,089.28 : x - Step 2: Convert to fraction form
792,415.84/1,188,610.80 = 319,089.28/x - Step 3: Cross multiply
792,415.84x = 1,188,610.80 × 319,089.28 - Step 4: Simplify right side
792,415.84x = 379,272,964,372.22 - Step 5: Solve for x
x = 379,272,964,372.22/792,415.84 - Step 6: Final answer
x = 478,628.70
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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.