Finding the Fourth Proportional to 977,186,496.80, 1,465,779,745.20 and 880,440,615.20
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Solution
The fourth proportional to 977,186,496.80, 1,465,779,745.20 and 880,440,615.20 is: 1,320,660,922.80
Step by Step Solution
- Step 1: Write the proportion equation
977,186,496.80 : 1,465,779,745.20 = 880,440,615.20 : x - Step 2: Convert to fraction form
977,186,496.80/1,465,779,745.20 = 880,440,615.20/x - Step 3: Cross multiply
977,186,496.80x = 1,465,779,745.20 × 880,440,615.20 - Step 4: Simplify right side
977,186,496.80x = 1,290,532,020,611,587,328 - Step 5: Solve for x
x = 1,290,532,020,611,587,328/977,186,496.80 - Step 6: Final answer
x = 1,320,660,922.80
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Similar ratio
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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.