Finding the Fourth Proportional to 656,139.42, 983,859.21 and 339,811.74
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Solution
The fourth proportional to 656,139.42, 983,859.21 and 339,811.74 is: 509,536.39
Step by Step Solution
- Step 1: Write the proportion equation
656,139.42 : 983,859.21 = 339,811.74 : x - Step 2: Convert to fraction form
656,139.42/983,859.21 = 339,811.74/x - Step 3: Cross multiply
656,139.42x = 983,859.21 × 339,811.74 - Step 4: Simplify right side
656,139.42x = 334,326,910,065.13 - Step 5: Solve for x
x = 334,326,910,065.13/656,139.42 - Step 6: Final answer
x = 509,536.39
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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.