Finding the Fourth Proportional to 491,120,107.20, 736,782,512.40 and 163,697,338.80
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Solution
The fourth proportional to 491,120,107.20, 736,782,512.40 and 163,697,338.80 is: 245,580,123.45
Step by Step Solution
- Step 1: Write the proportion equation
491,120,107.20 : 736,782,512.40 = 163,697,338.80 : x - Step 2: Convert to fraction form
491,120,107.20/736,782,512.40 = 163,697,338.80/x - Step 3: Cross multiply
491,120,107.20x = 736,782,512.40 × 163,697,338.80 - Step 4: Simplify right side
491,120,107.20x = 120,609,336,554,258,000 - Step 5: Solve for x
x = 120,609,336,554,258,000/491,120,107.20 - Step 6: Final answer
x = 245,580,123.45
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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.