Finding the Fourth Proportional to 646,821,634.60, 970,232,451.90 and 355,576,220.20
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Solution
The fourth proportional to 646,821,634.60, 970,232,451.90 and 355,576,220.20 is: 533,364,330.30
Step by Step Solution
- Step 1: Write the proportion equation
646,821,634.60 : 970,232,451.90 = 355,576,220.20 : x - Step 2: Convert to fraction form
646,821,634.60/970,232,451.90 = 355,576,220.20/x - Step 3: Cross multiply
646,821,634.60x = 970,232,451.90 × 355,576,220.20 - Step 4: Simplify right side
646,821,634.60x = 344,991,587,961,980,288 - Step 5: Solve for x
x = 344,991,587,961,980,288/646,821,634.60 - Step 6: Final answer
x = 533,364,330.30
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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.