Finding the Fourth Proportional to 875,400.75, 1,208,145.92 and 513,128.99
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Solution
The fourth proportional to 875,400.75, 1,208,145.92 and 513,128.99 is: 708,172.45
Step by Step Solution
- Step 1: Write the proportion equation
875,400.75 : 1,208,145.92 = 513,128.99 : x - Step 2: Convert to fraction form
875,400.75/1,208,145.92 = 513,128.99/x - Step 3: Cross multiply
875,400.75x = 1,208,145.92 × 513,128.99 - Step 4: Simplify right side
875,400.75x = 619,934,696,156.94 - Step 5: Solve for x
x = 619,934,696,156.94/875,400.75 - Step 6: Final answer
x = 708,172.45
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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.