Finding the Fourth Proportional to 1,296,078.12, 1,944,117.18 and 409,545
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Solution
The fourth proportional to 1,296,078.12, 1,944,117.18 and 409,545 is: 614,317.50
Step by Step Solution
- Step 1: Write the proportion equation
1,296,078.12 : 1,944,117.18 = 409,545 : x - Step 2: Convert to fraction form
1,296,078.12/1,944,117.18 = 409,545/x - Step 3: Cross multiply
1,296,078.12x = 1,944,117.18 × 409,545 - Step 4: Simplify right side
1,296,078.12x = 796,203,470,483.10 - Step 5: Solve for x
x = 796,203,470,483.10/1,296,078.12 - Step 6: Final answer
x = 614,317.50
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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.