Finding the Fourth Proportional to 977,186,494.80, 1,465,779,742.20 and 880,440,613.20
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Solution
The fourth proportional to 977,186,494.80, 1,465,779,742.20 and 880,440,613.20 is: 1,320,660,919.80
Step by Step Solution
- Step 1: Write the proportion equation
977,186,494.80 : 1,465,779,742.20 = 880,440,613.20 : x - Step 2: Convert to fraction form
977,186,494.80/1,465,779,742.20 = 880,440,613.20/x - Step 3: Cross multiply
977,186,494.80x = 1,465,779,742.20 × 880,440,613.20 - Step 4: Simplify right side
977,186,494.80x = 1,290,532,015,038,705,920 - Step 5: Solve for x
x = 1,290,532,015,038,705,920/977,186,494.80 - Step 6: Final answer
x = 1,320,660,919.80
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Double scale
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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.