Finding the Fourth Proportional to 659,990.70, 988,236.45 and 520,022.70
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Solution
The fourth proportional to 659,990.70, 988,236.45 and 520,022.70 is: 778,655.50
Step by Step Solution
- Step 1: Write the proportion equation
659,990.70 : 988,236.45 = 520,022.70 : x - Step 2: Convert to fraction form
659,990.70/988,236.45 = 520,022.70/x - Step 3: Cross multiply
659,990.70x = 988,236.45 × 520,022.70 - Step 4: Simplify right side
659,990.70x = 513,905,386,967.42 - Step 5: Solve for x
x = 513,905,386,967.42/659,990.70 - Step 6: Final answer
x = 778,655.50
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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.