Finding the Fourth Proportional to 687,188.76, 1,031,028.66 and 417,864.84
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Solution
The fourth proportional to 687,188.76, 1,031,028.66 and 417,864.84 is: 626,946.56
Step by Step Solution
- Step 1: Write the proportion equation
687,188.76 : 1,031,028.66 = 417,864.84 : x - Step 2: Convert to fraction form
687,188.76/1,031,028.66 = 417,864.84/x - Step 3: Cross multiply
687,188.76x = 1,031,028.66 × 417,864.84 - Step 4: Simplify right side
687,188.76x = 430,830,626,046.31 - Step 5: Solve for x
x = 430,830,626,046.31/687,188.76 - Step 6: Final answer
x = 626,946.56
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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.