Finding the Fourth Proportional to 995,331,311.80, 1,492,996,967.70 and 898,585,430.20
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Solution
The fourth proportional to 995,331,311.80, 1,492,996,967.70 and 898,585,430.20 is: 1,347,878,145.30
Step by Step Solution
- Step 1: Write the proportion equation
995,331,311.80 : 1,492,996,967.70 = 898,585,430.20 : x - Step 2: Convert to fraction form
995,331,311.80/1,492,996,967.70 = 898,585,430.20/x - Step 3: Cross multiply
995,331,311.80x = 1,492,996,967.70 × 898,585,430.20 - Step 4: Simplify right side
995,331,311.80x = 1,341,585,322,508,000,000 - Step 5: Solve for x
x = 1,341,585,322,508,000,000/995,331,311.80 - Step 6: Final answer
x = 1,347,878,145.30
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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.