Finding the Fourth Proportional to 690,283.96, 1,035,424.98 and 217,010.68
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Solution
The fourth proportional to 690,283.96, 1,035,424.98 and 217,010.68 is: 325,515.72
Step by Step Solution
- Step 1: Write the proportion equation
690,283.96 : 1,035,424.98 = 217,010.68 : x - Step 2: Convert to fraction form
690,283.96/1,035,424.98 = 217,010.68/x - Step 3: Cross multiply
690,283.96x = 1,035,424.98 × 217,010.68 - Step 4: Simplify right side
690,283.96x = 224,698,278,998.79 - Step 5: Solve for x
x = 224,698,278,998.79/690,283.96 - Step 6: Final answer
x = 325,515.72
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Double scale
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Similar ratio
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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.