Finding the Fourth Proportional to 459,187.20, 689,009.28 and 307,486.08
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Solution
The fourth proportional to 459,187.20, 689,009.28 and 307,486.08 is: 461,382.12
Step by Step Solution
- Step 1: Write the proportion equation
459,187.20 : 689,009.28 = 307,486.08 : x - Step 2: Convert to fraction form
459,187.20/689,009.28 = 307,486.08/x - Step 3: Cross multiply
459,187.20x = 689,009.28 × 307,486.08 - Step 4: Simplify right side
459,187.20x = 211,860,762,590.82 - Step 5: Solve for x
x = 211,860,762,590.82/459,187.20 - Step 6: Final answer
x = 461,382.12
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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.