Finding the Fourth Proportional to 724,886.68, 1,000,355.98 and 398,213.44
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Solution
The fourth proportional to 724,886.68, 1,000,355.98 and 398,213.44 is: 549,541.34
Step by Step Solution
- Step 1: Write the proportion equation
724,886.68 : 1,000,355.98 = 398,213.44 : x - Step 2: Convert to fraction form
724,886.68/1,000,355.98 = 398,213.44/x - Step 3: Cross multiply
724,886.68x = 1,000,355.98 × 398,213.44 - Step 4: Simplify right side
724,886.68x = 398,355,196,020.37 - Step 5: Solve for x
x = 398,355,196,020.37/724,886.68 - Step 6: Final answer
x = 549,541.34
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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.