Finding the Fourth Proportional to 509,811.23, 703,557.55 and 280,386.26
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Solution
The fourth proportional to 509,811.23, 703,557.55 and 280,386.26 is: 386,942.96
Step by Step Solution
- Step 1: Write the proportion equation
509,811.23 : 703,557.55 = 280,386.26 : x - Step 2: Convert to fraction form
509,811.23/703,557.55 = 280,386.26/x - Step 3: Cross multiply
509,811.23x = 703,557.55 × 280,386.26 - Step 4: Simplify right side
509,811.23x = 197,267,865,920.51 - Step 5: Solve for x
x = 197,267,865,920.51/509,811.23 - Step 6: Final answer
x = 386,942.96
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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.