Finding the Fourth Proportional to 765,461.36, 1,148,190.96 and 260,074.84
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Solution
The fourth proportional to 765,461.36, 1,148,190.96 and 260,074.84 is: 390,111.89
Step by Step Solution
- Step 1: Write the proportion equation
765,461.36 : 1,148,190.96 = 260,074.84 : x - Step 2: Convert to fraction form
765,461.36/1,148,190.96 = 260,074.84/x - Step 3: Cross multiply
765,461.36x = 1,148,190.96 × 260,074.84 - Step 4: Simplify right side
765,461.36x = 298,615,580,211.45 - Step 5: Solve for x
x = 298,615,580,211.45/765,461.36 - Step 6: Final answer
x = 390,111.89
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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.