Finding the Fourth Proportional to 420,300.79, 626,749.54 and 416,509.99
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Solution
The fourth proportional to 420,300.79, 626,749.54 and 416,509.99 is: 621,096.73
Step by Step Solution
- Step 1: Write the proportion equation
420,300.79 : 626,749.54 = 416,509.99 : x - Step 2: Convert to fraction form
420,300.79/626,749.54 = 416,509.99/x - Step 3: Cross multiply
420,300.79x = 626,749.54 × 416,509.99 - Step 4: Simplify right side
420,300.79x = 261,047,444,637.91 - Step 5: Solve for x
x = 261,047,444,637.91/420,300.79 - Step 6: Final answer
x = 621,096.73
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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.