Finding the Fourth Proportional to 509,728.68, 703,443.60 and 280,303.44
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Solution
The fourth proportional to 509,728.68, 703,443.60 and 280,303.44 is: 386,828.66
Step by Step Solution
- Step 1: Write the proportion equation
509,728.68 : 703,443.60 = 280,303.44 : x - Step 2: Convert to fraction form
509,728.68/703,443.60 = 280,303.44/x - Step 3: Cross multiply
509,728.68x = 703,443.60 × 280,303.44 - Step 4: Simplify right side
509,728.68x = 197,177,660,925.98 - Step 5: Solve for x
x = 197,177,660,925.98/509,728.68 - Step 6: Final answer
x = 386,828.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.