Finding the Fourth Proportional to 911,286,290.19, 1,257,575,122.89 and 493,598,575.95
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Solution
The fourth proportional to 911,286,290.19, 1,257,575,122.89 and 493,598,575.95 is: 681,166,057.79
Step by Step Solution
- Step 1: Write the proportion equation
911,286,290.19 : 1,257,575,122.89 = 493,598,575.95 : x - Step 2: Convert to fraction form
911,286,290.19/1,257,575,122.89 = 493,598,575.95/x - Step 3: Cross multiply
911,286,290.19x = 1,257,575,122.89 × 493,598,575.95 - Step 4: Simplify right side
911,286,290.19x = 620,737,289,808,650,240 - Step 5: Solve for x
x = 620,737,289,808,650,240/911,286,290.19 - Step 6: Final answer
x = 681,166,057.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.