Finding the Fourth Proportional to 390,635.70, 584,349.36 and 311,903.70
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Solution
The fourth proportional to 390,635.70, 584,349.36 and 311,903.70 is: 466,574.68
Step by Step Solution
- Step 1: Write the proportion equation
390,635.70 : 584,349.36 = 311,903.70 : x - Step 2: Convert to fraction form
390,635.70/584,349.36 = 311,903.70/x - Step 3: Cross multiply
390,635.70x = 584,349.36 × 311,903.70 - Step 4: Simplify right side
390,635.70x = 182,260,727,476.63 - Step 5: Solve for x
x = 182,260,727,476.63/390,635.70 - Step 6: Final answer
x = 466,574.68
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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.