Finding the Fourth Proportional to 5,220,831.90, 7,831,247.86 and 4,866,537.90
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Solution
The fourth proportional to 5,220,831.90, 7,831,247.86 and 4,866,537.90 is: 7,299,806.86
Step by Step Solution
- Step 1: Write the proportion equation
5,220,831.90 : 7,831,247.86 = 4,866,537.90 : x - Step 2: Convert to fraction form
5,220,831.90/7,831,247.86 = 4,866,537.90/x - Step 3: Cross multiply
5,220,831.90x = 7,831,247.86 × 4,866,537.90 - Step 4: Simplify right side
5,220,831.90x = 38,111,064,514,983.90 - Step 5: Solve for x
x = 38,111,064,514,983.90/5,220,831.90 - Step 6: Final answer
x = 7,299,806.86
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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.