Finding the Fourth Proportional to 812,440.28, 1,217,864.98 and 339,260.96
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Solution
The fourth proportional to 812,440.28, 1,217,864.98 and 339,260.96 is: 508,559.28
Step by Step Solution
- Step 1: Write the proportion equation
812,440.28 : 1,217,864.98 = 339,260.96 : x - Step 2: Convert to fraction form
812,440.28/1,217,864.98 = 339,260.96/x - Step 3: Cross multiply
812,440.28x = 1,217,864.98 × 339,260.96 - Step 4: Simplify right side
812,440.28x = 413,174,042,265.18 - Step 5: Solve for x
x = 413,174,042,265.18/812,440.28 - Step 6: Final answer
x = 508,559.28
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1.5x scale
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.