Finding the Fourth Proportional to 398,347,661.80, 597,521,492.70 and 330,323,213.80
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Solution
The fourth proportional to 398,347,661.80, 597,521,492.70 and 330,323,213.80 is: 495,484,820.70
Step by Step Solution
- Step 1: Write the proportion equation
398,347,661.80 : 597,521,492.70 = 330,323,213.80 : x - Step 2: Convert to fraction form
398,347,661.80/597,521,492.70 = 330,323,213.80/x - Step 3: Cross multiply
398,347,661.80x = 597,521,492.70 × 330,323,213.80 - Step 4: Simplify right side
398,347,661.80x = 197,375,219,783,237,248 - Step 5: Solve for x
x = 197,375,219,783,237,248/398,347,661.80 - Step 6: Final answer
x = 495,484,820.70
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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.