Finding the Fourth Proportional to 711,390.08, 981,749.76 and 409,681.28
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Solution
The fourth proportional to 711,390.08, 981,749.76 and 409,681.28 is: 565,378.28
Step by Step Solution
- Step 1: Write the proportion equation
711,390.08 : 981,749.76 = 409,681.28 : x - Step 2: Convert to fraction form
711,390.08/981,749.76 = 409,681.28/x - Step 3: Cross multiply
711,390.08x = 981,749.76 × 409,681.28 - Step 4: Simplify right side
711,390.08x = 402,204,498,316.49 - Step 5: Solve for x
x = 402,204,498,316.49/711,390.08 - Step 6: Final answer
x = 565,378.28
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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.