Finding the Fourth Proportional to 878,320.56, 1,211,637.24 and 555,486.96
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Solution
The fourth proportional to 878,320.56, 1,211,637.24 and 555,486.96 is: 766,290.48
Step by Step Solution
- Step 1: Write the proportion equation
878,320.56 : 1,211,637.24 = 555,486.96 : x - Step 2: Convert to fraction form
878,320.56/1,211,637.24 = 555,486.96/x - Step 3: Cross multiply
878,320.56x = 1,211,637.24 × 555,486.96 - Step 4: Simplify right side
878,320.56x = 673,048,687,070.39 - Step 5: Solve for x
x = 673,048,687,070.39/878,320.56 - Step 6: Final answer
x = 766,290.48
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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.