Finding the Fourth Proportional to 611,924,785.20, 917,887,177.80 and 490,992,433.20
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Solution
The fourth proportional to 611,924,785.20, 917,887,177.80 and 490,992,433.20 is: 736,488,649.80
Step by Step Solution
- Step 1: Write the proportion equation
611,924,785.20 : 917,887,177.80 = 490,992,433.20 : x - Step 2: Convert to fraction form
611,924,785.20/917,887,177.80 = 490,992,433.20/x - Step 3: Cross multiply
611,924,785.20x = 917,887,177.80 × 490,992,433.20 - Step 4: Simplify right side
611,924,785.20x = 450,675,658,831,102,976 - Step 5: Solve for x
x = 450,675,658,831,102,976/611,924,785.20 - Step 6: Final answer
x = 736,488,649.80
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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.