Finding the Fourth Proportional to 465,769.80, 698,654.70 and 128,809.80
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Solution
The fourth proportional to 465,769.80, 698,654.70 and 128,809.80 is: 193,214.70
Step by Step Solution
- Step 1: Write the proportion equation
465,769.80 : 698,654.70 = 128,809.80 : x - Step 2: Convert to fraction form
465,769.80/698,654.70 = 128,809.80/x - Step 3: Cross multiply
465,769.80x = 698,654.70 × 128,809.80 - Step 4: Simplify right side
465,769.80x = 89,993,572,176.06 - Step 5: Solve for x
x = 89,993,572,176.06/465,769.80 - Step 6: Final answer
x = 193,214.70
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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.