Finding the Fourth Proportional to 4,920,831.70, 7,381,247.55 and 2,759,638.30
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Solution
The fourth proportional to 4,920,831.70, 7,381,247.55 and 2,759,638.30 is: 4,139,457.45
Step by Step Solution
- Step 1: Write the proportion equation
4,920,831.70 : 7,381,247.55 = 2,759,638.30 : x - Step 2: Convert to fraction form
4,920,831.70/7,381,247.55 = 2,759,638.30/x - Step 3: Cross multiply
4,920,831.70x = 7,381,247.55 × 2,759,638.30 - Step 4: Simplify right side
4,920,831.70x = 20,369,573,440,761.16 - Step 5: Solve for x
x = 20,369,573,440,761.16/4,920,831.70 - Step 6: Final answer
x = 4,139,457.45
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1.5x scale
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.