Finding the Fourth Proportional to 552,879.84, 762,998.75 and 311,178.08
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Solution
The fourth proportional to 552,879.84, 762,998.75 and 311,178.08 is: 429,439.57
Step by Step Solution
- Step 1: Write the proportion equation
552,879.84 : 762,998.75 = 311,178.08 : x - Step 2: Convert to fraction form
552,879.84/762,998.75 = 311,178.08/x - Step 3: Cross multiply
552,879.84x = 762,998.75 × 311,178.08 - Step 4: Simplify right side
552,879.84x = 237,428,480,696.52 - Step 5: Solve for x
x = 237,428,480,696.52/552,879.84 - Step 6: Final answer
x = 429,439.57
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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.