Finding the Fourth Proportional to 878,449.05, 1,317,011.00 and 479,430.09
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Solution
The fourth proportional to 878,449.05, 1,317,011.00 and 479,430.09 is: 718,783.52
Step by Step Solution
- Step 1: Write the proportion equation
878,449.05 : 1,317,011.00 = 479,430.09 : x - Step 2: Convert to fraction form
878,449.05/1,317,011.00 = 479,430.09/x - Step 3: Cross multiply
878,449.05x = 1,317,011.00 × 479,430.09 - Step 4: Simplify right side
878,449.05x = 631,414,699,863.84 - Step 5: Solve for x
x = 631,414,699,863.84/878,449.05 - Step 6: Final answer
x = 718,783.52
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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.