Finding the Fourth Proportional to 812,586.84, 1,121,556.47 and 540,666.20
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Solution
The fourth proportional to 812,586.84, 1,121,556.47 and 540,666.20 is: 746,243.52
Step by Step Solution
- Step 1: Write the proportion equation
812,586.84 : 1,121,556.47 = 540,666.20 : x - Step 2: Convert to fraction form
812,586.84/1,121,556.47 = 540,666.20/x - Step 3: Cross multiply
812,586.84x = 1,121,556.47 × 540,666.20 - Step 4: Simplify right side
812,586.84x = 606,387,666,409.20 - Step 5: Solve for x
x = 606,387,666,409.20/812,586.84 - Step 6: Final answer
x = 746,243.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.