Finding the Fourth Proportional to 439,781.80, 659,672.70 and 393,125.80
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Solution
The fourth proportional to 439,781.80, 659,672.70 and 393,125.80 is: 589,688.70
Step by Step Solution
- Step 1: Write the proportion equation
439,781.80 : 659,672.70 = 393,125.80 : x - Step 2: Convert to fraction form
439,781.80/659,672.70 = 393,125.80/x - Step 3: Cross multiply
439,781.80x = 659,672.70 × 393,125.80 - Step 4: Simplify right side
439,781.80x = 259,334,357,925.66 - Step 5: Solve for x
x = 259,334,357,925.66/439,781.80 - Step 6: Final answer
x = 589,688.70
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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.