Finding the Fourth Proportional to 756,406,492.40, 1,134,609,738.60 and 464,326,518.80
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Solution
The fourth proportional to 756,406,492.40, 1,134,609,738.60 and 464,326,518.80 is: 696,489,778.20
Step by Step Solution
- Step 1: Write the proportion equation
756,406,492.40 : 1,134,609,738.60 = 464,326,518.80 : x - Step 2: Convert to fraction form
756,406,492.40/1,134,609,738.60 = 464,326,518.80/x - Step 3: Cross multiply
756,406,492.40x = 1,134,609,738.60 × 464,326,518.80 - Step 4: Simplify right side
756,406,492.40x = 526,829,390,120,715,968 - Step 5: Solve for x
x = 526,829,390,120,715,968/756,406,492.40 - Step 6: Final answer
x = 696,489,778.20
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Double scale
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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.