Finding the Fourth Proportional to 724,690.96, 1,000,165.80 and 438,213.08
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Solution
The fourth proportional to 724,690.96, 1,000,165.80 and 438,213.08 is: 604,789.85
Step by Step Solution
- Step 1: Write the proportion equation
724,690.96 : 1,000,165.80 = 438,213.08 : x - Step 2: Convert to fraction form
724,690.96/1,000,165.80 = 438,213.08/x - Step 3: Cross multiply
724,690.96x = 1,000,165.80 × 438,213.08 - Step 4: Simplify right side
724,690.96x = 438,285,735,728.66 - Step 5: Solve for x
x = 438,285,735,728.66/724,690.96 - Step 6: Final answer
x = 604,789.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.