Finding the Fourth Proportional to 805,220.70, 1,207,831.05 and 539,799.90
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Solution
The fourth proportional to 805,220.70, 1,207,831.05 and 539,799.90 is: 809,699.85
Step by Step Solution
- Step 1: Write the proportion equation
805,220.70 : 1,207,831.05 = 539,799.90 : x - Step 2: Convert to fraction form
805,220.70/1,207,831.05 = 539,799.90/x - Step 3: Cross multiply
805,220.70x = 1,207,831.05 × 539,799.90 - Step 4: Simplify right side
805,220.70x = 651,987,080,006.90 - Step 5: Solve for x
x = 651,987,080,006.90/805,220.70 - Step 6: Final answer
x = 809,699.85
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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.