Finding the Fourth Proportional to 459,103.80, 688,655.70 and 319,135.80
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Solution
The fourth proportional to 459,103.80, 688,655.70 and 319,135.80 is: 478,703.70
Step by Step Solution
- Step 1: Write the proportion equation
459,103.80 : 688,655.70 = 319,135.80 : x - Step 2: Convert to fraction form
459,103.80/688,655.70 = 319,135.80/x - Step 3: Cross multiply
459,103.80x = 688,655.70 × 319,135.80 - Step 4: Simplify right side
459,103.80x = 219,774,687,744.06 - Step 5: Solve for x
x = 219,774,687,744.06/459,103.80 - Step 6: Final answer
x = 478,703.70
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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.