Finding the Fourth Proportional to 812,616.12, 1,218,911.18 and 272,909.88
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Solution
The fourth proportional to 812,616.12, 1,218,911.18 and 272,909.88 is: 409,360.45
Step by Step Solution
- Step 1: Write the proportion equation
812,616.12 : 1,218,911.18 = 272,909.88 : x - Step 2: Convert to fraction form
812,616.12/1,218,911.18 = 272,909.88/x - Step 3: Cross multiply
812,616.12x = 1,218,911.18 × 272,909.88 - Step 4: Simplify right side
812,616.12x = 332,652,903,864.46 - Step 5: Solve for x
x = 332,652,903,864.46/812,616.12 - Step 6: Final answer
x = 409,360.45
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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.